A '''___domain application protocol''' (DAP) is the set of rules and conventions governing the interactions between participants in a [[distributed computing]] application.<ref>[https://books.google.co.ukcom/books?id=NZgHIFJeZvcC&pg=PA64&lpg=PA64&dqq=%22domain+application+protocol%22&source=bl&ots=ksf9ooeMua&sig=1MzhY_7Pk8S-GEPTWJkELb6wihg&hl=en&sa=X&ei=9dqfVbqZEcSBU_KCmLAL&ved=0CC4Q6AEwAg#v=onepage&q=%22domain%20application%20protocol22REST%223A&fpg=falseREST:PA64 From Research to Practice, ed. Erik Wilde, Cesare Pautasso, p64]</ref><!--Previous wording, doesn't make clear it's a computing matter: specify the legal interactions between a consumer and a set of resources involved in a business process. The term DAP is typically used in the context of [[Representational state transfer|Representational state transfer (REST)]].<ref>{{cite book|last1=Robinson|first1=Ian|title=REST: From Research to Practice|date=2011|publisher=Springer|___location=New York|isbn=978-1-4419-8302-2|pages=61–91|edition=1st|doi=10.1007/978-1-4419-8303-9_3|chapter=3}}</ref>-->
DAPs sit atop [[HTTP]] and narrow HTTP's broad application protocol to support specific business goals. Services implement DAPs by adding [[hypermedia]] links to resource representations. These links highlight other resources with which a consumer can interact to make progress through a business transaction.
