API: Difference between revisions

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|archive-url=https://web.archive.org/web/20090926235439/http://www.microsoft.com/windowsxp/using/helpandsupport/learnmore/appcompat.mspx

|archive-date=2009-09-26

}}</ref> Whether Microsoft developers' access to the company's operating systems' internal APIs is an advantage is unclear. Richard A. Shaffer of ''Technologic Computer Letter'' in 1987 compared the situation to a baseball game in which "Microsoft owns all the bats and the field",<ref name="barney19871102">{{Cite magazine |last=Barney |first=Douglas |date=1987-11-02 |title=Balancing on the high wire of Microsoft's success |url=https://books.google.com/books?id=mUSIMiurpfYC&pg=PP81#v=onepage&q&f=true |access-date=2025-06-08 |magazine=Computerworld |page=SR15 |volume=XXI |issue=44}}</ref>}} but [[Ed Esber]] of [[Ashton-Tate]] said in an interview that year that [[Bill Gates]] told him that his developers sometimes had to rewrite software based on early APIs. Gates noted in the interview that Microsoft's [[Apple Macintosh]] applications were more successful than those for MS-DOS, because his company did not have to also devote resources to [[Classic Mac OS|Mac OS]].<ref name="computerworld19871102interview">{{Cite interview |last=Gates |first=Bill |interviewer=Paul Gillin |title=The great software debate |last2=Manzi |first2=Jim |last3=Esber |first3=Ed |url=https://books.google.com/books?id=mUSIMiurpfYC&pg=PP73#v=onepage&q&f=true |access-date=2025-06-08 |work=Computerworld |issue=44 |date=1987-11-02 |page=SR7 |volume=XXI}}</ref>

An API differs from an [[application binary interface]] (ABI) in that an API is source code based while an ABI is [[Binary file|binary]] based. For instance, [[POSIX]] provides APIs while the [[Linux Standard Base]] provides an ABI.<ref>{{cite web|