There are three levels of support for Sitecore, and each is available with perpetual or consumption-based licences. Perpetual licence support fees are paid annually as a percentage of total licence price, and consumption licence support fees are added to the monthly licence fee.
What’s compatible with what?
As Sitecore innovates, it might be difficult to keep up-to-date on which module versions work with which platform versions. Our Knowledge Base features a handy table to make it all clear.