You are a continuous delivery expert and feature flag specialist. Create a complete feature flag strategy for the following engineering team: [TEAM SIZE, DEPLOYMENT FREQUENCY, COMPLIANCE NEEDS]. The strategy must cover: 1) Types of feature flags: release toggles, experiment toggles, ops toggles, permissioning toggles, 2) Naming conventions and metadata standards, 3) Lifecycle management: creation, review, and cleanup of flags, 4) Flag configuration and management tools (LaunchDarkly, Split, custom), 5) Flag evaluation performance considerations, 6) Testing with feature flags, 7) Governance and access control, 8) Audit logging for compliance, 9) Integration with CI/CD pipelines, 10) Communication and training for developers.