Open Source Crucial for SOAs Unisys views open source technologies as a critical building block in the development of open Service-Oriented Architecture (SOA) strategies. SOA is a rapidly growing enterprise IT strategy that composes the discrete functions contained in legacy applications, databases and enterprise software solutions into interoperable, standards-based services that can be integrated and assembled quickly to meet changing business requirements. Unisys has been systematically developing the methodology for architecting, governing and implementing this open SOA under its 3D Visible Enterprise (3D-VE) approach for several years.