About 15 years ago the (German) company I worked at had a lot of their customers from different industries run on SLES. But over time many customers just weren'

About 15 years ago the (German) company I worked at had a lot of their customers from different industries run on SLES. But over time many customers just weren't willing to sign up for OS support contracts anymore (and also switched from Oracle to MySQL). SLES/openSUSE never managed to get the same support from third parties and communities as CentOS/Fedora. With RHEL 6 we migrated all customers from SLES to CentOS/RHEL. This allowed to have a homogenous environment with and without enterprise support contracts. We'll have to see where this is going. Certain enterprise software (like Oracle) requires the use of certified operating systems or you lose support. Oracle Linux looks like the more natural choice.