An application platform is disclosed in a medical environment with a number of computer systems providing an information technology infrastructure and a plurality of basic information technology services to a number of users in the medical environment. At least one embodiment of the application platform provides a particularly simple and coordinated upgrade and update by independent software manufacturers and further provides a particularly high operational fail-safety during updates and upgrades by preventing damage to the systems caused by third party installer programs. To this end, at least one embodiment of the application platform includes a plurality of platform versioning building blocks and a number of platform data repositories, wherein the plurality of platform versioning building blocks are mutually independently updateable.