<?xml version="1.0" encoding="UTF-8"?><xml><records><record><source-app name="Biblio" version="6.x">Drupal-Biblio</source-app><ref-type>47</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Bruno Costa</style></author><author><style face="normal" font="default" size="100%">Miguel Matos</style></author><author><style face="normal" font="default" size="100%">António Luis Sousa</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">CAPI: Cloud Computing API</style></title><secondary-title><style face="normal" font="default" size="100%">Simpósio de Informática - INForum</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">2009</style></year><pub-dates><date><style  face="normal" font="default" size="100%">September</style></date></pub-dates></dates><urls><related-urls><url><style face="normal" font="default" size="100%">https://haslab.uminho.pt/sites/default/files/mmatos/files/inforum-capi.pdf</style></url></related-urls></urls><publisher><style face="normal" font="default" size="100%">Faculdade de Ciências da Universidade de Lisboa</style></publisher><pub-location><style face="normal" font="default" size="100%">Lisbon, Portugal</style></pub-location><pages><style face="normal" font="default" size="100%">499–502</style></pages><isbn><style face="normal" font="default" size="100%">978-972-9348-18-1</style></isbn><language><style face="normal" font="default" size="100%">eng</style></language><abstract><style face="normal" font="default" size="100%">&lt;p&gt;Cloud Computing is an emerging business model to provide access to IT resources in a pay per use fashion. Those resources range from low-level virtual machines, passing by application platforms and ending in ready to use software delivered through the Internet, creating a layered stack of differentiated services. Different cloud vendors tend to specialize in different levels, offering different services each with its own proprietary API. This clearly led to provider lock-in and hinders the portability of a given application between different providers. The goal of this paper is therefore to provide an abstraction of the different levels of services in order to reduce vendor lock-in and improve portability, two issues that we believe impair the adoption of the Cloud Computing model.&lt;/p&gt;
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