Netflix Eureka is a RESTful service registry designed to facilitate service discovery, load balancing, and failover in cloud environments, particularly within Amazon Web Services (AWS). It enables dynamic registration and deregistration of services, allowing client applications to locate and communicate with available service instances efficiently. Eureka's architecture supports resilience by replicating service registration information across multiple nodes, ensuring high availability and fault tolerance. Key Features and Functionality: - Service Discovery: Eureka allows services to register themselves and discover other services without hardcoded addresses, facilitating dynamic scaling and deployment. - Load Balancing: It provides client-side load balancing, distributing requests among available service instances to optimize resource utilization and performance. - Failover Support: Eureka enhances system resilience by enabling automatic failover, redirecting traffic from failing instances to healthy ones. - RESTful API: The service offers a REST-based interface for service registration, discovery, and health checks, simplifying integration with various applications. Primary Value and Problem Solved: Eureka addresses the challenges of managing service instances in dynamic cloud environments, where servers frequently scale up or down. By providing a centralized service registry, it eliminates the need for manual configuration of service endpoints, reducing the complexity and potential errors associated with service communication. This dynamic service discovery mechanism ensures that applications can adapt to changes in the infrastructure seamlessly, enhancing the overall reliability and scalability of distributed systems.