API Versioning Strategy Rollout

Break down API versioning strategy rollout into coordinated phases:

Current API State:
{{current_api_state}}

Client Ecosystem:
{{client_types}}

Versioning Strategy:
{{versioning_approach}}

Decompose into implementation phases:

1. PHASE 1: INFRASTRUCTURE SETUP
   - Version routing implementation
   - Header/URL parsing logic
   - Default version configuration
   Subtasks with specific implementation details

2. PHASE 2: V2 API DEVELOPMENT
   - New endpoint implementation
   - Breaking change documentation
   - Migration guide creation
   Subtasks with specific implementation details

3. PHASE 3: CLIENT MIGRATION
   - SDK updates
   - Client communication
   - Migration support period
   Subtasks with timeline and ownership

4. PHASE 4: V1 DEPRECATION
   - Deprecation warnings
   - Usage monitoring
   - Final sunset
   Subtasks with decision criteria

For each phase specify:
- Technical implementation steps
- Client communication templates
- Rollback procedures
- Success metrics
- Timeline estimates