All applications are offered as “annual subscriptions.” This means that the product can be used by one user on one computer for a period of one year. In principle, an annual subscription is not tied to a specific version of AutoCAD or AutoCAD Architecture, i.e., it can be used for any version. However, not all applications are available for all product versions on the market; this depends on demand. We are under no obligation to make an application available for another version if it was purchased for a specific version as part of an annual subscription. The cost of the annual subscriptions is listed on the page for the relevant products, along with a list of the versions available for download.