The Service Discovery layer is used for centralizing services into a universal registry and providing easy publish/find functionality.

Currently, service discovery is handled via Universal Description, Discovery, and Integration (UDDI).

The Service Discovery layer in the Web Service Protocol Stack is responsible for facilitating the automatic detection and registration of available services within a network. It allows clients to dynamically discover and consume services without prior knowledge of their locations or configurations. This layer plays a crucial role in enabling scalability, flexibility, and interoperability in distributed systems by abstracting the complexities of service location and management.