Infrastructure as a Service (IaaS) contains the basic building blocks for cloud IT and
typically provide access to networking features, computers (virtual or on dedicated
hardware), and data storage space
Platform as a Service (PaaS) removes the need for your organization to manage the underlying
infrastructure (usually hardware and operating systems) and allows you to focus on the
deployment and management of your applications
Software as a Service (SaaS) provides you with a completed product that is run and managed
by the service provider. In most cases, people referring to Software as a Service are
referring to end-user applications
Database as a Service (DBaaS) is a type of PaaS in which a managed database is offered for
consumption