a loosely coupled architecture.
a tightly coupled architecture.
a stateless architecture.
a stateful architecture.
Explanations:
Breaking down a monolithic architecture into microservices promotes a loosely coupled architecture, where each microservice can operate independently, allowing for greater flexibility, scalability, and easier maintenance.
A tightly coupled architecture means that components are interdependent, making it difficult to modify or scale them independently. Microservices are designed to avoid this tight coupling.
A stateless architecture refers to systems that do not retain state information between requests. While microservices can be stateless, the transition from a monolith does not inherently mean the resulting architecture is stateless.
A stateful architecture retains state information across sessions or requests, which can be the case for some microservices. However, the microservices approach itself does not dictate that the architecture must be stateful.
To the best of my knowledge, the answer is:
a loosely coupled architecture.