Description: Eureka is a service discovery tool developed by Netflix as part of its open-source toolkit known as Netflix OSS. Its main function is to facilitate communication between microservices in distributed architectures, allowing them to find and connect efficiently. Eureka acts as a service registry where microservices can register and discover other services available on the network. This is particularly useful in environments where services can scale dynamically and where the location of services may change frequently. Additionally, Eureka offers features such as service availability management, allowing clients to access only those services that are active and functioning correctly. Its integration with in-memory databases allows for fast and efficient access to registry information, thus improving the overall performance of applications. In summary, Eureka is a key solution for microservice management, optimizing communication and resilience in complex distributed systems.