What are the main features that distinguish a microservices architecture?

The architecture based on microservices is characterized by the following main features:

• Modularity and independence of services: the system is divided into many small, autonomous services, each responsible for a specific business function.
• Isolated deployment: each microservice can be deployed, updated, and scaled independently of others.
• Own database: microservices often have their own data stores, reducing coupling.
• Interaction via API: services communicate with each other through well-defined interfaces, usually via HTTP REST, gRPC, or messaging.
• Diversity of technologies: different microservices can be written in different languages and use different technologies suitable for their tasks.
• Resilience to failures: a failure of one service does not lead to the collapse of the entire system.

Example: in an online store, one microservice is responsible for the product catalog, another for order processing, and a third for payment.