A domain-specific language (DSL) is a programming language designed for a specific domain. Examples include LaTeX for document layout, SQL for databases, and HTML for document markup. DSLs allow users without programming expertise to work within their domain. They achieve a high level of abstraction and expressiveness for their domain. However, DSLs can be difficult to build, achieve high performance with, and require learning multiple languages as each domain typically has its own. DSLs are either built upon an existing language as an internal DSL, or built from scratch as an external DSL. This document discusses using a DSL to generate service components for service-oriented architecture applications to simplify implementation.