Windows Open Services Architecture

Windows Open Services Architecture (WOSA) is a set of proprietary Microsoft technologies intended to "...provide a single, open-ended interface to enterprise computing environments.".[https://etcitcse.files.wordpress.com/2012/01/wosa.pdf#WOSA overview PDF] WOSA was announced by Microsoft in 1992.{{Cite web|url=https://books.google.com/books?id=7j0EAAAAMBAJ&q=microsoft+%22windows+open+services+architecture%22+announce&pg=PA8|title=Infoworld March 9, 1992|last=|first=|date=1992-02-26|website=Computer Business Review|language=en-GB|archive-url=|archive-date=|access-date=2020-01-30}} WOSA was pitched as a set of programming interfaces designed to provide application interoperability across the Windows environment.

The set of technologies that were part of the WOSA initiative include:{{Cite web|url=https://www.pcmag.com/encyclopedia/term/wosa|title=Definition of WOSA|website=PCMAG|language=en|access-date=2020-01-30}}

• LSAPI (Software Licensing API)
• MAPI (Mail Application Programming Interface)
• ODBC{{Cite web|url=https://docs.microsoft.com/en-us/cpp/data/odbc/odbc-basics|title=ODBC Basics|last=corob-msft|website=docs.microsoft.com|language=en-us|access-date=2020-01-30}} (Open Database Connectivity)
• OLE for Process Control
• SAPI (Speech Application Programming Interface)
• TAPI (Telephony Application Programming Interface)
• Windows SNA (IBM SNA Networks)
• WOSA/XFS (WOSA for Financial Services)
• WOSA/XRT (WOSA for Real-time Market Data)