"PaaS is defined as a computing platform delivered as a service." (Martin Oberhofer et al, "The Art of Enterprise Information Architecture", 2010)
"Delivery of an application development platform (hardware and software) from a third party via the Internet without having to buy and manage these resources." (Bill Holtsnider & Brian D Jaffe, "IT Manager's Handbook" 3rd Ed., 2012)
"A cloud service that abstracts the computing services, including the operating software and the development and deployment and management life cycle. It sits on top of Infrastructure as a Service." (Marcia Kaufman et al, "Big Data For Dummies", 2013)
"A cloud service that abstracts the computing services, including the operating software and the development, deployment, and management life cycle. It sits on top of Infrastructure as a Service (IaaS)." (Judith S Hurwitz, "Cognitive Computing and Big Data Analytics", 2015)
"Delivery of a computing platform as a service." (Mike Harwood, "Internet Security: How to Defend Against Attackers on the Web" 2nd Ed., 2015)
"The capability provided to the customer to deploy onto the cloud infrastructure customer-created or acquired applications created using programming languages and tools supported by the provider. The consumer does not manage or control the underlying cloud infrastructure, including network, servers, operating systems, or storage, but has control over the deployed applications and possibly application hosting environment configurations." (James R Kalyvas & Michael R Overly, "Big Data: A Businessand Legal Guide", 2015)
"A cloud-based service that typically provides a platform on which software can be developed and deployed." (H James Harrington & William S Ruggles, "Project Management for Performance Improvement Teams", 2018)
"A complete application platform for multitenant cloud environments that includes development tools, runtime, and administration and management tools and services, PaaS combines an application platform with managed cloud infrastructure services." (Forrester)
"A services providing all the necessary infrastructure for cloud computing solutions." (Analytics Insight)
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