Visionary: Oracle

The software and systems giant is a relatively new entrant to the cloud infrastructure market, but made a strong debut on Gartner's Magic Quadrant as a Visionary.

Oracle didn't launch its first IaaS offering until late 2015, when it introduced Oracle Compute Cloud Service, or its "Gen 1 Cloud". In November 2016, Oracle launched Oracle Bare Metal Cloud Services, also known as "Gen 2 Cloud".

The acquisition of Ravello, an overlay on top of third-party clouds to facilitate migrations and interoperability, beefed up those offerings.

Oracle's Gen 2, a combination of bare-metal and virtualized servers, is well-suited for cloud-native applications or batch computing. It's also a pretty good environment on which to run Oracle databases.