Enterprise architecture operating model optimisation for a multi-national bank
A fragmented EA function
Enterprise Architecture (EA) responsibilities were fragmented across domains and delivery teams, slowing design decisions, diluting standards, and creating rework late in the change delivery lifecycle. Solution architects were operating as isolated problem solvers; data, security and platform concerns arrived too late; and the Design Authority had become a rubber stamp rather than a decision engine.
The client needed a clear and optimised EA target operating model - roles, forums and measures that would speed up high-quality design decisions and make architecture value visible to business and technology leadership.
Target operating model design for the EA function
We co-designed the EA target operating model with business and technology stakeholders. Role charters and a RACI were designed across domain, solution, data, security and platform architecture roles. We set decision rights and engagement points across intake → discovery → design → delivery → run; and codified artefact expectations (solution intent, decision records, reuse patterns).
We established a pragmatic governance regime - Architecture Review Board / Design Authority cadence, intake criteria, fast track/exception processes, and dispensation rules - with escalation paths into the CTO function. We also built a performance framework with a focused KPI set and scorecards (lead time to design sign off, reuse rate, policy compliance, defect escape, NFR coverage), and delivered enablement packs for architects and delivery leads, including a pattern catalogue and reference architecture library.
Clearer accountabilities, faster decisions, visible value
- Faster, better decisions: design sign-off lead times reduced by c.30% and late stage portfolio churn lowered through early EA engagement
- Architectural pattern re-use: consistent guardrails and accessible pattern catalogue increased reuse and design standards compliance
- Clear accountability: unambiguous role charters and RACIs reduced overlaps and hand-offs across product and platform teams
- Visible EA value: dashboards and newly introduced KPIs evidenced EA function’s contribution to successful change delivery and technology risk reduction
