Do you know what monolithic architecture is and how it fundamentally differs from microservices in testing?

Monolithic architecture is a single application where all components are tightly coupled and deployed together. Testing a monolith usually makes it easier to verify integration, as everything is in one process and environment.

Microservices architecture consists of many independent services that interact via APIs. When testing microservices, it is important to focus on:

• Testing each service separately (unit and integration tests)
• Testing interactions between services (contract testing)
• Ensuring fault tolerance (resilience testing)

Thus, the fundamental difference is that microservices require a more complex testing strategy for distributed components and their interactions.