We can start to discuss Vertical Considerations of microservices architectures. These are:

Microservices Decomposition — Breaking Down Microservices

Microservices Communications (Sync / Async Message-Based Communication, API Gws)

Microservices Data Management (Databases / Query / Commands)

Microservices Transaction Management

Microservices Distributed Caching

Microservices Deployments with Containers and Orchestrators

Microservices Resilience with Distributed Logging, Tracing and Health

Microservices Testing; Contract Testing, Integration Testing, E2E Test

Microservices Security; Authentication and Authorization

https://medium.com/@satyajitmails/microservices-architectural-building-blocks-and-trends-cfacc642b646