Stage 7 summary. Running EA as a Capability

15 min 10 concepts 10 figures

Stage 7 turns enterprise architecture from advice into a sustained operating capability. It builds the machine that makes architecture decisions stick, the seven components of an EA capability distilled from G184, an Architecture Board with explicit decision rights, a compliance discipline with waivers and Architecture Contracts, skills and maturity work that diagnoses rather than decorates, and tailoring that keeps the method proportionate. It then runs that machine through the ADM's two governance phases, Phase G during the build and Phase H once the architecture is live, and closes with the skills that keep the capability funded, a value scorecard the board can read, operating models that scale beyond a central review queue, and the one-slide story that wins the decision.

The thread running through every module is blunt. Structure on paper proves nothing. A capability is real only when it produces visible behaviour and decision impact, when a delivery lead can trace a constraint to its rationale, an exception carries an expiry date somebody tracks, and a board can repeat the recommendation it just approved. Every test in this stage exists to separate that reality from decoration.

The sections follow the stage's teaching order, so you can read straight through to rebuild the stage in your head, or jump to the concept you need. Each section links back to its module for the full treatment.

What you carry out of this stage

  • Name the seven components of an EA capability distilled from G184 and apply the five diagnostic tests that separate a working capability from an architect with a title
  • Design an Architecture Board with a bounded remit and set decision rights at three levels, board decides, domain architect decides with the board informed, delivery team decides within guardrails
  • Run an Architecture Compliance review using the six levels of conformance, keep rule compliance and intent compliance apart, and write a waiver with all six elements
  • Use the G198 competency categories and the G203 maturity models to diagnose a weak behaviour, its operating consequence, and the smallest intervention that would visibly improve it
  • Tailor the ADM with the four patterns while keeping the five minimum viable controls and passing the four-question proportionality test
  • State what Phase G consumes and produces, and classify a Phase H change as simplification, incremental, or re-architecting with its ADM re-entry point
  • Build a four-measure value scorecard tied to the investment case and report it as an outcome-first board narrative with a clear ask
  • Place architecture inside product and platform teams as an enabling function with federated decision rights

An EA capability is an operating model, not a job title

An enterprise architecture capability is the operating model that turns architecture from advice into decisions. The primary TOGAF source is G184, the Leader's Guide to Establishing and Evolving an EA Capability, which treats the capability as a business asset that must be designed, funded, staffed, governed, and continuously improved. This course distils that guidance into seven components. Sponsorship and leadership, governance structure, architecture method and process, content framework and repository, roles and skills, delivery interfaces, and measurement and continuous improvement. If any is absent, the capability is incomplete regardless of how talented the architects are.

The stage opens with the failure that makes the framework necessary. A regulated infrastructure company hired a competent chief architect in 2020 and declared the capability established. A year later nothing had fundamentally changed, because hiring supplies only the roles component. Five diagnostic tests reveal whether a capability is real. Can the team name an active executive sponsor, point to three decisions architecture materially changed in six months, let a new joiner find the target architecture and decision log within an hour, hear a delivery lead describe defined engagement points, and show that deviations surface as recorded exceptions rather than post-implementation audit findings.

TOGAF does not prescribe one placement for the team. Three patterns recur. A centralised model gives strong coherence but risks distance from delivery, a federated model puts domain architects inside business units with a light central function coordinating coherence, and an embedded model disperses architects entirely into delivery teams. Most large regulated enterprises use a federated model or a centralised one with deliberate delivery embedding, because the choice follows coordination needs, regulatory obligations, and the number of cross-domain boundaries that need attention.

Three authority levels of the federated EA operating model

Authority is not budget: a level may decide a thing without owning the money for it. The central board sets principles, the federated domain boards are the pivot that is free within those principles and answerable for them, and local teams design within the catalogue.

Three authority levels of the federated EA operating model A federated operating model as three authority levels stacked top to bottom, each read across three bands. The top central board decides principles, standards and waivers alone and cannot pick a local vendor or platform stack. The middle domain boards, marked as the pivot by an accent border, decide the domain model, contracts and vendor and cannot override a principle without a waiver. The foot project teams decide component design within standards and cannot add a pattern outside the catalogue. A soft green band marks what a level decides alone, a soft accent band what it consults first, a soft amber band what it cannot do. A left-margin arrow carries principles from central to local. Decides aloneConsults firstCannot do Central boardEnterprise levelDecides alonePrinciples, standardsand waiversConsults firstDomain leads oncross-domain changeCannot doPick a local vendor orplatform stack Domain boardsFederated levelPivot of the modelDecides aloneDomain model, contractsand vendorConsults firstCentral on principleand standardCannot doOverride a principlewithout a waiver Project teamsLocal levelDecides aloneComponent design withinstandardsConsults firstDomain board onintegration choiceCannot doAdd a pattern outsidethe catalogue principles down

The Architecture Board protects coherence through explicit decision rights

The TOGAF Standard describes the Architecture Board as a cross-organisation body that oversees the implementation of the governance strategy and is responsible for the review and maintenance of the overall architecture. That is a coherence job, not a universal review job. The government agency in the opening story reviewed 247 items in a year and decided 11, because its charter promised to review and advise on all architecture matters, its decision rights were assumed rather than written down, and no triage separated board-level items from the rest. Delivery teams learned the board was a formality and routed around it.

The remedy is a three-level decision-rights structure. The board decides genuinely cross-enterprise questions, target-state and transition choices, material exceptions, cross-domain integration conflicts, release conditions with enterprise consequence, and principle interpretations that set precedent. The domain architect decides bounded domain questions with the board informed. The delivery team decides within published guardrails with no escalation at all. The practical test is predictability. If a delivery lead cannot predict whether a decision needs board review, the rights are not clear enough, and teams will either over-escalate or quietly diverge.

Composition and cadence keep the board decisive. It should represent business, technology, delivery, and architecture, stay small enough to decide, typically 6 to 10 members, and meet on a rhythm that protects decision time, with decision items taking the largest share of a structured agenda ahead of exception review, information items, and a forward look. London runs an 8-member board chaired by the chief architect, meeting fortnightly for 90 minutes with papers circulated 48 hours ahead, and its published decision log feeds the regulatory submissions a regulated utility must defend.

Architecture board decision rights across scope and reversibility

Two questions set who owns a call: a reversible local choice stays with the team, a cross-domain or irreversible one goes to the domain board, and only the cross-domain irreversible call reaches the central board, so no small choice wastes the board's time.

Architecture board decision rights across scope and reversibility A two-by-two matrix of decision rights on two blue axis rails: a vertical Scope rail, local to cross-domain, and a horizontal Reversibility rail, reversible to irreversible, along the bottom. Each quadrant names the owner that combination assigns. Local plus reversible is the lightest path on a calm tint: the team decides, no board involvement. Local plus irreversible and cross-domain plus reversible both go to the domain board, central board informed. Cross-domain plus irreversible, on a soft accent tint as the heaviest call, is the only one the central board owns outright: deliberate and slow by design. A legend names the three owners. Scope: local to cross-domain Reversibility: reversible to irreversible Cross-domain, reversible Domain board decides Central board informed Standard review Cross-domain, irreversible Central board owns Deliberate, slow by design Heaviest review Local, reversible Team decides No board involvement Lightest path Local, irreversible Domain board decides Central board informed Standard review Team decides, no boardBoard escalation, tinted card is the central-board call

Six conformance levels, healthy waivers, and the Architecture Contract

The Architecture Compliance chapter of the C220 EA Capability and Governance volume grades an implementation against the architecture specification on six levels, irrelevant, consistent, compliant, conformant, fully conformant, and non-conformant, so assessment never collapses into a binary pass or fail. Compliant means a faithful subset of the specification, conformant means everything specified plus extras, fully conformant means full correspondence, and non-conformant is reserved for specified features implemented out of line with the specification. The review itself runs as five moves, raise the request and confirm scope, prepare the evidence pack, hold the review, record findings, and decide and sign off, with the decision recorded in the repository.

Grading the letter is not enough. Rule compliance asks whether formal standards, controls, and obligations are met. Intent compliance asks whether the architecture's deeper purpose, interoperability, resilience, and future coherence, survives local compromises. The bank in the opening story had marked every project compliant while fourteen had deviated materially, because its checklist verified documents rather than intent. Conditional alignment is the governed middle ground, letting a change proceed temporarily because compensating controls, follow-on work, and review conditions are explicit and bounded.

That middle ground is where waivers live. TOGAF's own term for the instrument is a dispensation, and a healthy one has six elements, a deviation description, the enterprise consequence, a business justification, compensating controls, an expiry condition, and governance approval, with the expiry condition the element most commonly missing. The Architecture Contract frames the whole exchange. C220 defines it as a joint agreement between development partners and sponsors on the deliverables, quality, and fitness-for-purpose of an architecture. It is established at the start of Phase G, reused by Phase H to judge later change, and adds most value at cross-team handoffs, with external delivery partners, and at regulated milestones.

Compliance, waiver and contract as one flow ending in audit evidence

These are four stages of one flow, not three separate processes: a compliance check surfaces a gap, a waiver request justifies it, the Architecture Board sets contract terms, and the whole trail is filed, so each stage feeds the next and the record must hold from the first check.

Compliance, waiver and contract as one flow ending in audit evidence Four flat stage panels wrap over two rows, joined by labelled flow arrows, each panel naming its stage, the role that owns it and the artefact it hands on. Top row: Stage 1, Compliance check, owned by the architect, tests a requirement and outputs a named gap. An arrow labelled raises leads to Stage 2, Waiver request, owned by the requester, which outputs a decision request. An arrow labelled decides wraps down to the second row: Stage 3, Contract, owned by the board and tinted to mark the governed decision, setting the agreed terms. An arrow labelled files leads to Stage 4, Audit evidence, owned by the auditor, filing the whole trail as the audit record the auditor reads. Stage 1Compliance checkRequirement testedOwned byArchitectOutput: a named gap Stage 2Waiver requestGap justified, owner setOwned byRequesterOutput: decision request Stage 3ContractScope, expiry, conditionsOwned byBoardOutput: agreed terms Stage 4Audit evidenceWhole trail filedOwned byAuditorOutput: the audit record raises files decides

Skills frameworks and maturity models are diagnosis, not decoration

G198, the Architecture Skills Framework, organises what an architecture function can do into seven competency categories, generic skills, business skills and methods, enterprise architecture skills, programme or project management skills, IT general knowledge, technical IT skills, and the legal environment, each assessed across four proficiency levels, background, awareness, knowledge, and expert. The Open Group superseded G198 in 2024 with G249, Architecture Roles and Skills, but the seven-category, four-level structure taught here comes from G198. The point is fit, not maximum scores. A chief architect needs depth in EA, business, and generic skills, while a domain architect needs depth in their domain, so the framework maps the gap between the skills the team has and the skills the enterprise needs.

G203, Architecture Maturity Models, assesses the function as a system, building on the Architecture Capability Maturity Model with levels running from Level 0, None, to Level 5, Measured, scored per dimension rather than as one blended number. A score only becomes useful when it survives three questions. What specific behaviour is weak, what consequence does that create, and what is the smallest intervention that would visibly improve it. The insurer in the opening story paid four months of fees for a Level 2 label that could not answer the CTO's test, what would we do differently tomorrow, which is the difference between diagnosis and decoration.

One risk stays invisible to every maturity score, concentration. A function can score Level 3 across the board and still be one resignation away from losing its repository knowledge, board facilitation, or sole delivery interface. Mapping G198 proficiency across the team exposes any category held at depth by a single person. For London the critical needs are OT/IT boundary expertise across SCADA and network automation, regulatory fluency in Ofgem obligations, stakeholder facilitation, and repository stewardship, each carrying a concentration risk if held in one head.

The five architecture skill levels from practitioner to coach

Each level is defined by what the person can own alone: a practitioner owns components, an architect a project, a senior a domain, a lead a programme, and a coach the practice itself, so a level rests on demonstrated scope rather than years served.

The five architecture skill levels from practitioner to coach A five-rung skills ladder drawn as an ascent, with a left-hand axis pointing up labelled growing capability, wider scope. From the bottom up: Level 1 Practitioner owns components within a project, scope component. Level 2 Architect owns the architecture of a project, scope project. Level 3 Senior architect owns one domain end to end, scope domain. Level 4 Lead architect owns architecture across a programme, scope programme. Level 5 Coach at the top, tinted to mark that it owns the practice itself, shapes other architects, scope centre of excellence. Each level is set by the deliverable the person can own alone. Growing capability, wider scope L5CoachShapes other architects and owns the practiceCentre of excellence L4Lead architectOwns architecture across a programmeProgramme L3Senior architectOwns one domain end to endDomain L2ArchitectOwns the architecture of a projectProject L1PractitionerOwns components within a projectComponent

Bureaucracy is an implementation choice, and tailoring has a floor

TOGAF is often blamed for bureaucracy the standard never asked for. Five implementation choices account for most of it, unclear decision rights, over-centralised review, artefact production without a decision purpose, fear-driven governance, and no tailoring discipline. The technology company in the opening story built 47 mandatory templates and taught its delivery teams to relabel projects as operational improvements to escape the process. None of that is the method. C220 Part 3 states that the ADM is intended to be used flexibly and tailored, so a rigid, heavyweight implementation is a local choice.

Deliberate tailoring uses four patterns drawn from C220 Part 3 and G20F, Enabling Enterprise Agility. Iteration and levels adjust the depth of an ADM pass, phase selection enters the method at the phase that matches the problem, artefact selection treats the content framework as a menu rather than a checklist, and governance scaling matches governance weight to decision consequence. The floor beneath all of it is five minimum viable controls that survive even the lightest implementation, a scope statement, active principles, a decision log, an exception register, and a lightweight review path. The four-question proportionality test checks the result, can the enterprise explain its decisions to a sceptical stakeholder, control material exceptions, hold a cross-domain picture delivery teams find useful, and answer a real question from the repository faster than asking a senior architect from memory.

G210, Applying the TOGAF ADM using Agile Sprints, shows the method running at delivery speed without dilution. An architecture runway keeps just-enough decisions ahead of the sprints, reviews align with sprint boundaries instead of a parallel calendar, and governance attaches to decision points rather than to every sprint output. London applies the same proportionality as three governance tiers, full weight for cross-domain, target-state, and regulatory decisions, lighter review for domain choices inside the approved target, and minimal governance for bounded operational change, so the right governance cost lands on the right decision.

The right TOGAF posture for each programme size and regulatory weight

Scale the method to the work: only a large, heavily regulated programme earns full ADM, a small light one needs principles alone, and the two in between keep just the phases their size and regulator demand, since full method everywhere is bureaucracy and none at all is chaos.

The right TOGAF posture for each programme size and regulatory weight A two-by-two map of minimum viable TOGAF on two blue axis rails: a vertical Programme size rail, small to large, and a horizontal Regulatory weight rail, light to heavy, along the bottom. Each quadrant names the right posture, with a green marker for the method it keeps and an amber marker for what it drops. Small and light is Principles only. Small and heavy adds phases B, D and G for governance while dropping C and E to F. Large and light runs ADM A to D with H skipped. Large and heavy, carrying the accent tint as the one full-method case, is full ADM with all artefacts and board governance, dropping nothing. Programme size: small to large Regulatory weight: light to heavy Large, light ADM A to D, skip H Vision and content, lighter governance Drops change-management phase H Large, heavy Full ADM All artefacts, full board governance Drops nothing: every phase runs Small, light Principles only Plus one viewpoint per stakeholder Drops the formal ADM cycle Small, heavy Principles plus B, D, G Keeps governance for the regulator Drops phases C and E to F Method the posture keepsMethod it drops

The London repository runs governance as one operating system

The London governance repository organises the stage's machinery into seven sections, each answering a different governance question. Architecture principles hold the active set of 12 with rationale and implications. Target-state definitions hold the versioned target for each domain. The decision log records every significant decision with its rationale within 24 hours of each board meeting. The exception register holds active waivers with all six elements. Compliance records capture each milestone assessment and its conformance category. Architecture contracts hold the live agreements with delivery programmes. The board charter publishes composition, decision rights, and cadence. The operational test is the one from the tailoring module, a repository earns its name when it answers a real question faster than asking a senior architect from memory.

The synthesis module walks one decision end to end to prove the parts act as one system. A request to replace the connection-offer calculation engine is triaged against the decision rights matrix, reaches the board with a decision paper referencing principles by name, is conditionally approved subject to an architecture contract and a first-milestone compliance review, and the review's single non-conformance becomes a waiver with compensating controls and an expiry date. When internal audit later picked that decision at random, the decision log produced the board's rationale in four minutes and every other answer came from a different repository section, which is what an operating model looks like when it is real.

Two further disciplines complete the model. Release decisions in a regulated utility draw on three assurance streams, architecture, cyber, and operational, because each catches risks the others miss, and the board can attach conditions, delay, or escalate on any of them. And five behavioural tests distinguish real governance from decoration, the right forum decides the right question, repository artefacts feed board decisions, exceptions stay visible and time-bounded, release conditions reflect combined assurance, and delivery teams can describe their governance engagement without saying they avoid it.

The five-stage assurance pipeline for London governance decisions

Five owned stages carry an LGD board decision from capture through assurance into a filed evidence pack, each handing the next a named artefact, so Ofgem can read the decisions from the repository without LGD legal in the room.

The five-stage assurance pipeline for London governance decisions A vertical five-stage pipeline with a left axis pointing down, labelled decision to evidence. Each stage names its owning function as a left chip and the artefact it hands on as a right tag, with downward flow arrows between stages. Stage 1, the architecture board, captures the decision as a board minute. Stage 2, the repository team, categorises it into a tagged record. Stage 3, internal audit, checks it against principle and standard, producing an audit finding. Stage 4, the secretariat, assembles the assurance pack. Stage 5, the accent-tinted destination, files the evidence in the regulator-readable section of the repository. Decision to evidence Artefact handed on Architecture board1Capture the decisionThe board minutes the decision as it is takenBoard minute Repository team2CategoriseTag by domain, principle and source standardTagged record Internal audit3AssureCheck the decision against principle and standardAudit finding Secretariat4PackAssemble the assurance pack with cross-referencesAssurance pack Repository team5File the evidenceLodge in the regulator-readable section of the repositoryFiled evidence tagged audited packaged filed

Phases G and H govern the build, then the live architecture

Phase G, Implementation Governance, is where intent is defended while other people do the work. Its objective is to ensure implementation projects conform to the target architecture and to govern the Architecture Contract that covers implementation and deployment. It consumes three inputs as a working baseline. The Architecture Contract sets the standard, the Implementation and Migration Plan sets the sequence, and the Architecture Definition Document sets the target. Governance then runs continuously through the build, confirming scope with development, checking conformance, routing genuine deviations through the contract's waiver mechanism rather than around it, and recording every decision so it can be traced later.

Phase G's output is the Compliance Assessment, a recorded judgement of where a delivered solution conforms and where it deviates. The deployed-solution sign-off loop turns that judgement into a gate. A step deploys only when it conforms or its deviation has been formally accepted, otherwise it is sent back, corrected, and reassessed. The utility in the opening story had a board, a contract, and a plan, and still watched its build quietly become something else over eleven months, because nobody was consuming those documents during delivery. When a step is signed off, its Compliance Assessment passes to Phase H as the baseline for managing the live system.

Phase H, Architecture Change Management, is the eighth and final ADM phase and the feedback loop that keeps the target honest. Every change request is triaged into one of three categories that decide its ADM re-entry. A simplification change reduces cost or complexity and is handled through routine change governance. An incremental change adds value inside the current target and re-enters at a later phase such as migration planning. A re-architecting change moves what the enterprise is for and restarts the ADM from the Architecture Vision. The classification must be explicit and recorded, because eleven small changes can quietly amount to a re-architecting decision nobody named. Phase H also monitors value realisation, comparing the benefits the business case promised with the benefits delivered, and treats any shortfall as a fresh change signal.

Phase H change classification: one triage question, three re-entry points

Phase H triages every change request into simplification, incremental, or re-architecting, and the category alone decides where the request re-enters the ADM, so a small optimisation never restarts the cycle and a strategic shift never slips through as a tweak.

Phase H change classification: one triage question, three re-entry points A Phase H change-classification path. A change request arrives, then a triage step asks how far the change reaches against the current target architecture. Three arrows fan out to three outcomes ordered by disruption. Simplification is a small cost-removing change handled through change governance; worked example, retire a duplicate meter-data feed. Incremental adds capability inside the target state and re-enters at Phase F or earlier; worked example, add EV-charging demand. Re-architecting exceeds the target state and restarts the ADM at the Architecture Vision; worked example, a whole-system move to a DSO model. Each category leads to exactly one re-entry point. Change request arrivesA new requirement, incident, or strategy shift. Triage: how far does the change reach?Assess impact against the current target state. Least disruptiveModerateMost disruptive Category 1SimplificationA small change that removescost or effort.Where it re-enters the ADMHandle through changegovernance.Worked exampleRetire a duplicatemeter-data feed.Category 2IncrementalAdds capability inside thetarget state.Where it re-enters the ADMRe-enter at Phase F orearlier.Worked exampleAdd EV-charging demand tothe model.Category 3Re-architectingChange exceeds the currenttarget state.Where it re-enters the ADMRestart the ADM at theArchitecture Vision.Worked exampleWhole-system move to a DSOmodel. One triage question, one category, one re-entry point

EA value is measured in outcomes and settled against the investment case

An architecture function that cannot show its value in terms a board recognises will eventually be asked why it exists. The measurement discipline starts by separating activity from value. We reviewed forty designs is activity. Designs now reach release five weeks faster because teams reuse agreed patterns is value. The second distinction is between leading measures, which move early and predict an outcome, and lagging measures, which confirm it after the fact. A scorecard built only from lagging measures tells the board the truth too late to act on, and one built only from leading measures predicts value it can never confirm.

The working scorecard is small, four measures covering flow, coherence, resilience, and money. Change lead time and pattern reuse lead, risk reduction and cost avoidance lag. Each measure carries a plain definition, a baseline, a source, and a link to the investment case, and that last link is what turns a statistic into evidence, because every number on the page settles a promise the enterprise was funded against. A measure with no home in the investment case should be dropped, and a promise with no measure is not being kept visibly.

London's architecture function reports on a single page each board cycle. Design-to-release fell from 18 weeks to 7, pattern reuse rose from one in five new builds to three in five, open resilience gaps fell from nine to two, and three overlapping platforms became one retired platform. The narrative that carries the scorecard leads with the outcome, shows each movement from its baseline, anchors it to the committed money, and ends with a clear ask. Activity belongs at the back, if anywhere, because a board reads outcome, cost, and decision.

An enterprise architecture value scorecard for the transformation

A board-ready scorecard pairs leading measures that predict value, change lead time and pattern reuse, with lagging measures that confirm it, risk reduction and cost avoidance, and reads each row from baseline to current result so the board sees direction, not one number.

An enterprise architecture value scorecard for the transformation A value scorecard for the London Grid Distribution transformation, one measure per row, with two leading measures then two lagging measures. A left rail names each measure, its metric number and whether it is leading or lagging; a baseline panel states the position at the start of the price control, and a measured-over-ED2 arrow crosses to a current panel with the position reported to the board. Change lead time falls from eighteen weeks to seven weeks per change; pattern reuse rises from one in five builds to three in five; open resilience gaps fall from nine to two as they are caught at design review; and duplicated platforms become one platform retired with spend removed from the plan. Baseline at the start of the price control Current position reported to the board Metric 1Change lead timeLeading 18 weeks per changeDesign to first release Over ED2 7 weeks per changeReused patterns cut rework Metric 2Pattern reuseLeading 1 in 5 builds reuseMost teams start from scratch Over ED2 3 in 5 builds reuseShared catalogue adopted Metric 3Risk reductionLagging 9 open resilience gapsFound late, in delivery Over ED2 2 open resilience gapsCaught at design review Metric 4Cost avoidanceLagging Duplicated platformsThree overlapping systems Over ED2 One platform retiredSpend removed from the plan Leading measure, predicts valueCurrent result, confirms valueLagging measure, confirms outcome

Product and platform models make architecture an enabling function

The classic model from earlier in the stage has a structural weakness. When delivery is organised as temporary projects, no team owns a system for its whole life, so the central architecture function becomes the memory of record and the review queue every change waits in. London's connections systems lived that story, a minor form update queuing in the same lane as a network-critical data change. A product operating model changes the unit of ownership. A long-lived team owns a product for as long as it has users and keeps improving it, so knowledge and most decisions stay with a standing team instead of a temporary one.

Product teams raise a second question, whether every team must build its own identity, data access, deployment, and monitoring. A platform team exists to prevent that. It runs an internal platform, a curated set of shared capabilities offered as a self-service product whose users are the other teams. Self-service is the test that separates a real platform from a rebranded gatekeeper. If product teams must raise a ticket and wait, the platform has recreated the central bottleneck under a different name. In a regulated context the platform is also the safety mechanism, because teams inherit the enterprise's security and resilience posture by default.

Architecture changes shape inside this model. It becomes an enabling function, a small central team that publishes the guardrails, principles, standards, patterns, and the target architecture, and places architects inside product and platform teams rather than reviewing from a distance. Governance federates. The centre keeps the enterprise-level decisions that cannot be delegated, principles, standards, cross-team contracts, and anything with regulatory exposure, while product and platform teams decide locally inside the guardrails. London's connections product team now builds on the internal platform, and the centre keeps the data contract with the network model, so the queue shrank while the network stayed protected.

Where architecture sits in a product and platform operating model

A central enabling architecture function holds only the enterprise-level decisions and publishes principles downward, while product and platform teams hold the local decisions inside those guardrails and raise exceptions back up, so no single board approves every change.

Where architecture sits in a product and platform operating model A federated operating-model map with three bands read top to bottom. The top band is central architecture as an enabling function, a small team that sets shared principles and standards and holds the enterprise-level decisions. The middle band is product teams that own a product end to end, holding local design calls inside the published guardrails. The bottom band is platform teams that run shared internal capabilities as self-service products, holding local platform calls. A right-hand rail on each band names the decision right it holds. Accent connectors show principles pushed down and exceptions raised back up, and a legend names enterprise-level versus local decision rights. Federated: the centre enables, the teams decide locally CentreCentral architecture as an enabling functionA small team that sets shared principles and standardsPublishes guardrails, does not approve every changeHoldsEnterprise choicesCannot be delegated ProductProduct teams own a product end to endLong-lived teams with an architect inside the teamDecide local design inside the published guardrailsHoldsLocal product callsInside the guardrails PlatformPlatform teams run shared internal capabilitiesInternal products the product teams build onOwn the platform, offer it as a self-service productHoldsLocal platform callsInside the guardrails Principles and standardsExceptions raised upPrinciples and standardsExceptions raised up Enterprise-level decision right, held at the centreLocal decision right, held by the team

The board story leads with the decision, not the work

Architecture only changes an enterprise when a board backs it, so communicating upward is part of the job, not a soft extra. The TOGAF ADM treats it that way, producing a Communications Plan early and naming stakeholder management among the most important activities in a successful architecture effort. The stage's cautionary tale is London's own first attempt, a 40-slide roadmap that reached the funding ask on slide 37 and was deferred, not because the architecture was wrong but because the board never reached a point where it could say yes or no.

The fix is an ordering change. Architecture work is produced bottom-up, baselines, gaps, targets, transitions, and must be told top-down, the structure Barbara Minto set out in the Pyramid Principle. The one-slide architecture story carries the whole recommendation in four parts a board can take in at a glance. The situation states the fact that forces a decision now, the options name the genuine alternatives with honest trade-offs, the recommendation states the single option and the one reason it wins, and the risk names the residual exposure the board is accepting and who owns it. A case with no rejected options reads as a decision already made, and a case with no owned risk reads as a risk being hidden.

The rest of the skill is played before the room. Map each executive by power and interest, win the high-power, high-interest people individually before the meeting, and meet each concern on its own terms rather than overriding it, the finance director resisting a rebuild is protecting a budget line, so show the option costed inside the allowance. Told that way, London's phased three-year rebuild of the 11 kV control estate, framed against the RIIO-ED2 allowance from the first line, was approved in twenty minutes. The 40 slides survived unchanged as the appendix behind the one slide.

The one-slide board recommendation: four parts in reading order

A board recommendation is one slide read top to bottom in four parts, situation, options, recommendation and risk, so the board reaches the ask already holding the reasoning, and the decision is the last thing they read, not the first.

The one-slide board recommendation: four parts in reading order A one-slide board recommendation shown as four flat panels read top to bottom, joined by a quiet accent reading-order spine on the left. Part 1 Situation states the fact that forces a decision now; the London line is the ageing 11 kV control estate cannot carry EV load. Part 2 Options names two or three real options with honest trade-offs; London weighs patch and defer, full replace now, or a phased rebuild. Part 3 Recommendation gives one option and the one-line reason it wins; London recommends the phased rebuild funded from the RIIO-ED2 allowance. Part 4 Risk states the residual risk the board accepts and its named owner; London names supplier lead times owned by the programme director. The four parts, in reading order What you write, and the London roadmap line that shows it Part 1SituationWhy are we here now? State the fact that forces a decision now, not the past.London: the ageing 11 kV control estate cannot carry EV load. Part 2OptionsWhat did youconsider? Name two or three real options and each honest trade-off.London: patch and defer, full replace now, or a phased rebuild. Part 3RecommendationWhat are you askingus to back? One recommended option, and the one-line reason it wins.London: the phased rebuild, funded from the RIIO-ED2 allowance. Part 4RiskWhat could go wrong,and who owns it? The residual risk the board accepts, and its named owner.London: supplier lead times, owned by the programme director.

One board decision, traceable end to end

The stage's proof runs through London Grid Distribution's governance repository. Internal audit picked one board decision at random, the conditional approval of the new connection-offer calculation engine, and traced it end to end. The decision log produced the board's rationale in four minutes, the architecture contract showed the agreed conformance criteria, the compliance record showed the first-milestone review and its single non-conformance, and the exception register showed the resulting waiver with its compensating controls and an expiry date eleven weeks away. Every answer came from a different part of the operating model, board behaviour, compliance handling, repository stewardship, and assurance logic, and the walkthrough held because the parts acted as one system.

The regulated context sharpens every idea in the stage. The 8-member board's decision log feeds regulatory submissions, three governance tiers put the right governance cost on the right decision, Phase G Compliance Assessments double as evidence that delivery met commitments, the value scorecard settles promises in the business plan the function was funded against, the connections product team builds on an internal platform that carries the regulated guardrails by default, and the 11 kV recommendation passed once it was framed against the RIIO-ED2 allowance from the first line. Hold that thread. The scenario practice keeps returning to it, one decision at a time.

The traps this stage warns against

  • Treating a chief architect appointment as an established capability.

    Instead: Hiring supplies only the roles component of seven. Define the capability by its interfaces, owned outputs, and measures of usefulness, and check it against the five diagnostic tests before calling it real.

  • Letting the Architecture Board review everything so nothing slips through.

    Instead: A board that reviews everything usually decides little and teaches teams to route around it. Give it a short list of genuinely cross-enterprise decisions and delegate the rest through explicit three-level decision rights.

  • Passing every formal compliance check and assuming the architecture is protected.

    Instead: Rule compliance is necessary but not sufficient. A design can tick every box and still defeat the architecture's intent, so assess interoperability, resilience, and future coherence alongside the formal standards.

  • Reporting a maturity score as a finished output.

    Instead: A score is decoration until it names the weak behaviour, the consequence that weakness creates, and the smallest intervention that would visibly improve it.

  • Calling it tailoring when steps are dropped just to move faster.

    Instead: Tailor only to the floor of the five minimum controls, a scope statement, active principles, a decision log, an exception register, and a lightweight review path, and confirm the four proportionality questions still pass.

  • Opening the board report with everything the architecture team did.

    Instead: A board reads outcome, cost, and decision. Lead with the outcome, show each measure moving from its baseline, tie it to the investment case, and end with a clear ask.

Core distinctions

  • Seven components make an EA capability, sponsorship, governance, method, content and repository, roles and skills, delivery interfaces, and measurement, and a title supplies only one of them
  • The Architecture Board protects cross-enterprise coherence, and decision rights sit at three levels, board decides, domain architect decides with the board informed, delivery team decides within guardrails
  • The six levels of conformance run from irrelevant through consistent, compliant, conformant, and fully conformant to non-conformant, so compliance never collapses into a binary verdict
  • A healthy waiver has six elements, and the expiry condition is the one most commonly missing
  • An Architecture Contract is a joint agreement on deliverables, quality, and fitness-for-purpose, established at the start of Phase G and reused by Phase H
  • G198 gives seven competency categories across four proficiency levels, and a G203 maturity score diagnoses only when it names the weak behaviour, its consequence, and the smallest fix
  • Even the lightest tailoring keeps five controls, a scope statement, active principles, a decision log, an exception register, and a lightweight review path
  • Phase G's Compliance Assessment gates deployment, and Phase H classifies every change as simplification, incremental, or re-architecting to decide where it re-enters the ADM
  • A value scorecard pairs leading measures, lead time and reuse, with lagging measures, risk reduction and cost avoidance, and ties every number to the investment case

That is the whole stage in one place. The capability and its seven components, the board and its decision rights, compliance with waivers and Architecture Contracts, skills and maturity as diagnosis, proportionate tailoring, the London repository, the two governance phases, the value scorecard, the product and platform model, and the board story. The scenario practice now puts those ideas to work on realistic situations and the common mistakes, one London Grid decision at a time, before the timed stage assessment.

Sources and further reading