The microservice architecture contains components depending on the business requirements. API Gateway- Clients need API Gateway as it is an entry point, which forwards the call to the specific services on the back end. Here API gateway helps in collecting the responses from different services and returns the response to the client. Microservices- As the name itself suggests that microservices are the services that help in dividing the service into small services that perform a certain business capability like user registration, current orders, or wish list. Database- Microservices can either share the same database or an independent database. Inter-microservices communication- REST or Messaging are the protocol to interact with each other.