Architecture & control · reference function

Cloud Architecture

Translate service and risk requirements into approved technical direction.

Reference mandate

Own cloud architecture principles, target designs, reusable patterns and authoritative design decisions within an explicitly delegated scope.

Short

Translate service and risk requirements into approved technical direction.

Standard

Own cloud architecture principles, target designs, reusable patterns and authoritative design decisions within an explicitly delegated scope.

Detailed

Own cloud architecture principles, target designs, reusable patterns and authoritative design decisions within an explicitly delegated scope. The function maintains explicit decision boundaries, measurable outcomes, governed interfaces and a documented improvement loop for its scope.

Scope in

  • Architecture principles
  • Reference patterns
  • Design decisions
  • Technical debt direction

Scope out

  • Policy ownership
  • Day-to-day platform delivery
  • Business risk acceptance

Responsibilities

  • Architecture principles
  • Reference patterns
  • Design decisions
  • Technical debt direction

Services

  • Architecture principles service
  • Reference patterns service
  • Design decisions service
  • Technical debt direction service

Required capabilities

  • Lead Cloud Architect capability
  • Domain Architect capability

Roles

  • Lead Cloud Architect
  • Domain Architect

Decision rights

  • Approve architecture patterns
  • Approve design deviations
  • Set technical constraints

Key interfaces

  • Cloud Governance / CCoE
  • Platform Engineering
  • Cloud Security & Assurance

Inputs

  • Requirements from Cloud Governance / CCoE
  • Requirements from Platform Engineering

Outputs

  • Governed output to Platform Engineering
  • Governed output to Cloud Security & Assurance

Governance forums

  • Architect design review
  • Cloud operating-model review

Measures

  • Pattern reuse
  • Decision turnaround
  • Architecture-debt closure

Dependencies

  • Cloud Governance / CCoE
  • Platform Engineering
  • Cloud Security & Assurance

Sourcing options

  • Retained internal
  • Shared
  • MSP-supported

Organizational placements

  • Central cloud organization
  • Federated domain
  • Shared technology function

Decisions owned

  • Approve architecture patterns
  • Approve design deviations
  • Set technical constraints

Decisions contributed to

  • Contribute to decisions owned by Cloud Governance / CCoE
  • Contribute to decisions owned by Platform Engineering
  • Contribute to decisions owned by Cloud Security & Assurance
Design boundary

Common failure modes

  • Produces documents without delivery feedback
  • Conflicts with engineering ownership
  • Reviews every low-risk change
Sourcing principle

Architecture authority remains internal even when design work is supported externally.

Minimum retained capability

Architecture authority remains internal even when design work is supported externally.

Maturity guidance

Begin with named ownership and one measurable outcome; add delegation and automation only when evidence and capability are reliable.

Reference note

Vendor-neutral practitioner reference pattern; validate against organizational, regulatory and sourcing context.

Version 2026.3 · reviewed 8 September 2026