Oracle Cloud consists of the following services from Oracle:

Software as a Service (SaaS): Enterprise applications: SCM, EPM, HCM, ERP and CX SaaS offerings

Platform as a Service (PaaS): Platform services on which to build and deploy applications or extend SaaS applications: database, Java application server, mobile, business analytics, integration, process, big data, Internet of Things, Node.js etc.

Oracle Cloud Platform: Infrastructure as a Service (IaaS) Compute Service, Storage Service, Network Service

On July 28, 2016 Oracle bought NetSuite, the very first cloud company, for $9.3 billion.