How did you decide which parts to split the monolith into?

The decision to split a monolith into parts is usually based on several key factors:

• Responsibility areas: dividing modules by business functions so that each part is responsible for a specific set of tasks.
• Frequency of changes: modules that change often are better separated to minimize impact on the rest of the system.
• Deployment independence: separating services that can be deployed and scaled independently.
• Team structure: dividing by teams to reduce conflicts and increase autonomy.

For example, if a monolith has separate components for authentication, payment processing, and content management, these can be separated into individual services to improve scalability and simplify maintenance.