What makes you prefer microservices architecture when developing applications?

Microservices architecture is preferred when an application needs to be scalable, flexible, and easy to maintain. It allows breaking down the system into independent services that can be developed, deployed, and scaled separately. This increases the system's resilience — a failure of one microservice does not lead to the entire application crashing.

Additionally, microservices facilitate the adoption of new technologies and updates, as changes are limited within a single service. In Node.js, this is conveniently implemented thanks to modularity and a large number of libraries.

Example: if you have an application with separate modules for authentication, product catalog, and payment, microservices will allow updating or scaling each module independently.