file extension AAR

Apache Axis2 is the core engine for Web services.
Axis2 has many new features, enhancements and industry specification implementations.

The key features offered are as follows:

• SPEED - it uses its own object model and StAX (Streaming API for XML) parsing to achieve significantly greate speed.
• LOW MEMORY FOOT PRINT
• AXIOM - Axis2 comes with its own light-weight object model, AXIOM, for message processing which is extensible, highly performant and is developer convenient.
• HOT DEPLOYMENT - new services can be added to the system without having to shut down the server.
• ASYNCHRONOUS WEB SERVICES - it supports asynchronous Web services and asynchronous Web services invocation using non-blocking clients and transports.
• MEP SUPPORT - it comes handy with the flexibility to support Message Exchange Patterns (MEPs) with in-built support for basic MEPs defined in WSDL 2.0.
• FLEXIBILITY - the architecture gives the developer complete freedom to insert extensions into the engine for custom header processing and system management.
• STABILITY - it defines a set of published interfaces which change relatively slowly compared to the rest of Axis.
• COMPONENT-ORIENTED DEPLOYMENT - you can easily define reusable networks of Handlers to implement common patterns of processing for your applications, or to distribute to partners.
• TRANSPORT FRAMEWORK - a clean and simple abstraction for integrating and using Transports (i.e., senders and listeners for SOAP over various protocols such as SMTP, FTP, message-oriented middleware, etc).
• WSDL SUPPORT - it supports the Web Service Description Language.
• ADD-ONS - several Web services specifications have been incorporated including WSS4J for security (Apache Rampart), Sandesha for reliable messaging, Kandula which is an encapsulation of WS-Coordination, WS-AtomicTransaction and WS-BusinessActivity.
• COMPOSITION AND EXTENSIBILITY - modules and phases improve support for composability and extensibility.