A Service Implementation Bean (SIB), is a term used in Java Platform, Enterprise Edition, for a Java object implementing a web service. It can be either a POJO or a Stateless Session EJB. The Java interface of an SIB is called a Service Endpoint Interface (SEI).
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Last revised May 30, 2026
Service Implementation Bean
A Service Implementation Bean (SIB), is a term used in Java Platform, Enterprise Edition, for a Java object implementing a web service. It can be either a POJO or a Stateless Session EJB. The Java interface of an SIB is called a Service Endpoint Interface (SEI).