API Gateway and service discovery are integral components in modern microservices architecture, facilitating efficient communication and management of services.

API Gateway: An API Gateway acts as a central entry point for client applications to access various microservices. It handles request routing, load balancing, authentication, authorization, and other cross-cutting concerns, simplifying client interactions and providing a unified API interface.

Service Discovery: Service discovery automates the process of locating and connecting to services within a dynamic environment. It enables services to register themselves and discover others, allowing applications to adapt to changes in service locations, scaling, and availability.

Together, API Gateway and service discovery enhance the resilience, scalability, and manageability of microservices-based applications by streamlining communication, enforcing security, and providing dynamic adaptability in response to changes in the service landscape.