Why does the Social Security Agency embrace Service Oriented Architecture (SOA) as a key component of its IT strategy through 2016? It is because "SOA is an IT architectural approach that makes use of reusable components or services...Our WebSphere/CICS model supports WebSphere application design and its interface with CICS, allowing us to leverage decades of proven, optimized software while modernizing the user interfaces from outdated 'green screens' to web-based designs."