Apache Axis2/C是一个采用C语言实现的Web service引擎。它基于可扩展和灵活的Axis2 architecture架构。Apache Axis2/C可用于提供和调用WebServices。Apache Axis2/C具有轻便，可嵌入的特点，使用它容易集成到其它软件中。
Apache Axis2/C支持SOAP 1.1 和 SOAP 1.2, 还有 REST 风格的Webservices。 一个服务可以同时发布成SOAP与REST两种风格。它还内置 MTOM 支持，可用于交换二进制数据，比如图片的上传与下载。

Apache Axis2/ C是高效，模块化与可扩展性。其扩展性设计使得它能够支持WS-*栈模块的概念。Apache Axis2/C支持大部分采用C语言实现的WS-*规范。 这使它能够使用C实现Service Oriented Architecture (SOA)架构，以及将遗留系统集成到SOA时非常有用。

关键特性：

1. Support for one-way messaging (In-Only) and request response messaging (In-Out)
2. Client APIs: Easy to use service client API and more advanced operation client API
3. Transports supported: HTTP
   • Inbuilt HTTP server called simple axis server
   • Apache2 httpd module called mod_axis2 for server side
   • IIS module for server side. Supports IIS 5.1, 6 and 7
   • Client transport with ability to enable SSL support
   • Basic HTTP Authentication
   • AMQP Transport based on Apache Qpid (Experimental)
   • 
     
   • libcurl based client transport
   • CGI interface
4. Module architecture, mechanism to extend the SOAP processing model
5. WS-Addressing support, both the submission (2004/08) and final (2005/08) versions, implemented as a module
6. MTOM/XOP support
7. XPath support for Axiom XML Object model
8. AXIOM, an XML object model optimized for SOAP 1.1/1.2 messages; This has complete XML infoset support
9. XML parser abstraction
   • Libxml2 wrapper
   • Guththila pull parser support
10. Both directory based and archive based deployment models for deploying services and modules
11. Description hierarchy providing access to static data of Axis2/C runtime (configuration, service groups, services, operations and messages)
12. Context hierarchy providing access to dynamic Axis2/C runtime information(corresponding contexts to map to each level of description hierarchy)
13. Message receiver abstraction
    • Inbuilt raw XML message receiver
14. Code generation tool for stub and skeleton generation for a given WSDL (based on Java tool)
    • Axis Data Binding (ADB) support
15. Transport proxy support
16. REST support (more POX like) using both HTTP POST and GET
17. Comprehensive documentation
    • Axis2/C Manual
18. WS-Policy implementation called Neethi/C, with WS-SecurityPolicy extension
19. TCP Transport, for both client and server side

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