Microservices Decomposition

Help me decompose this monolith into services:

CURRENT SYSTEM:
[Describe the monolith - modules, responsibilities]

PAIN POINTS:
- [Why we want to split it]
- [Current problems]

CONSTRAINTS:
- Team structure: [how teams are organized]
- Timeline: [how quickly we need to migrate]
- Risk tolerance: [how critical is the system]

Please suggest:
1. Service boundaries (how to divide)
2. Data ownership per service
3. Communication patterns between services
4. Migration strategy (what order)
5. Risks and mitigation strategies