Additional Documentation Center documentation

The Documentation Center contains additional documentation deliverables for SDL Tridion Sites 9.

NameDescriptionURL
SDL Tridion Sites 9 prerequisitesA list of prerequisites for this release, including support history tableshttps://docs.sdl.com/SDLTridionSites9/Prerequisites
SDL Tridion Sites 9 legacy documentationDocumentation of legacy functionality (deprecated features)https://docs.sdl.com/SDLTridionSites9/Legacy