V.E.R.A. -- Virtual Entity of Relevant Acronyms (February 2016):

IAP
       In-App Purchase


V.E.R.A. -- Virtual Entity of Relevant Acronyms (February 2016):

IAP
       Internet Access Provider (Internet)


The Free On-line Dictionary of Computing (30 December 2018):

Internet Access Provider
IAP
provider

    (IAP) A company or other origanisation
   which provides access to the Internet to businesses and/or
   consumers.  An IAP purchases an Internet link from another
   company that has a direct link to the Internet and resells
   portions of that bandwidth to the general public.

   For example, an IAP may purchase a T1 link (1.544Mb/s) and
   resell that bandwidth in chunks consisting of ISDN (64Kb/s,
   128Kb/s) and analog modems (14.4Kb/s, 28.8Kb/s).  The IAP's
   customer base is likely to include both businesses and
   individuals.  Individual customers usually connect to the IAP
   via a modem and telephone line to a (preferably local) point
   of presence.

   An IAP may also be an Internet Service Provider.

   (1996-06-25)