Platform-as-a-Service (PaaS)
• Allows a cloud user  to deploy consumer-created or acquired
applications using programming languages and tools supported by
the service provider.
• The user:
– Has control over the deployed applications and, possibly, application
hosting environment configurations.
– Does not manage or control the underlying cloud infrastructure including
network, servers, operating systems, or storage.
• Not particularly useful when:
– The application must be portable.
– Proprietary programming languages are used.
– The hardware and software must be customized to improve the
performance of the application.