IBM acquired Red Hat, one of the biggest open source technology companies. It is enterprise open source solutions, including Linux.
Red Hat deals with storage, operating system platforms, middleware, apps, management products and support and consulting services.
It creates, maintains and contributes to many open source projects. It earns money by selling services.
Red Hat is CLI-based. For beginners, Ubuntu is easier and more convenient.
Red Hat is here since the dawn of Linux era. Its focus is on business apps rather than consumer use.
Google Cloud has built hybrid cloud with Red Hat. Since November 2013, it is Red Hat Certified Cloud provider.