Rollout Strategy
Implement in waves, not one big bang.
Wave 0: Foundation (2-4 weeks)
- Define standards and ownership
- Build base pipeline templates
- Create baseline branch policy scripts
- Select pilot teams and repositories
Exit criteria:
- governance document approved
- templates versioned
- pilot backlog and success metrics agreed
Wave 1: Pilot (4-8 weeks)
- Apply baseline controls to 3-5 representative repos
- Enable environment checks for one production service
- Enable secret scanning and at least one additional scan type
- Validate developer experience and tune exceptions
Exit criteria:
- no high-severity delivery blockers
- stable PR/build/deploy cycle
- documented exception and break-glass process
Wave 2: Scale (8-16 weeks)
- Rollout branch and pipeline standards across all tier-1 repos
- Enforce required templates on protected resources
- Expand scanning and remediation SLAs
- Launch compliance dashboards and monthly access reviews
Exit criteria:
-
90% policy coverage on in-scope repos
- production resources protected by approval/check baseline
- security triage operating weekly
Wave 3: Optimize (continuous)
- Reduce lead time and false-positive noise
- Improve risk-based approvals
- Automate drift detection and remediation
- Evolve maturity targets quarterly
Maturity Model
Level 1 - Ad hoc
- Team-by-team practices
- inconsistent branch and pipeline controls
- minimal auditing and scanning
Level 2 - Standardized
- Common branch policies and PR standards
- template-based pipeline patterns
- production approvals/checks in place
Level 3 - Governed
- policy compliance measured automatically
- scanning + remediation SLAs tracked
- access reviews and exception governance operational
Level 4 - Optimized
- risk-based dynamic controls
- high automation and low manual overhead
- continuous improvement with measurable outcomes
KPI Targets (Example)
- Branch policy coverage: >= 95% in-scope repos
- Required template adoption: >= 90% production pipelines
- Production gate coverage: 100% production environments
- Critical vulnerability remediation: <= 7 days median
- Unauthorized direct pushes to protected branches: 0
Change Management and Adoption
- Publish short standards and reference implementations.
- Offer office hours and platform support channels.
- Track developer friction and remove unnecessary manual approvals.
- Communicate policy changes with effective dates.
Exception Management Model
Each exception should include:
- control being bypassed
- business justification
- risk assessment
- compensating controls
- owner and expiry date
No permanent exceptions. All exceptions must expire or be renewed with approval.
Audit Evidence Pack (Recommended)
Collect monthly evidence for:
- branch policy configurations
- production approvals/checks screenshots or API exports
- pipeline template version adoption report
- security scan coverage and findings trend
- access review completion log
90-Day Action Plan
- Establish governance council and standards.
- Implement pilot templates and branch policies.
- Protect production environments with checks.
- Enable scanning on critical repositories.
- Publish compliance dashboard and run first review.
- Expand rollout to remaining in-scope teams.
Final Guidance
Focus on outcomes, not checkbox compliance. The right implementation is the one that:
- improves delivery reliability
- reduces security risk
- preserves developer flow
- remains auditable under pressure