SAA is a collection of selected software interfaces, conventions, and protocols that are used as a framework for developing consistent, integrated applications across the major IBM computing environments.<br><br>Four major components of this architecture are:<br><br> 1. Common User Access (CUA) defines conventions for GUI look and feel.<br> 2. Common Programming Interface (CPI) provides languages, tools, and APIs that give applications greater portability and more consistent user interfaces across multiple platforms.<br> 3. Common Communication Support (CCS) supports existing communications standards, such as LU 6.2.<br> 4. Common Applications, written by IBM, will serve as demonstrations of SAA concepts and make it easy for users to migrate between systems.<br>
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