One software license is required per production environment, per year.
You will need to renew your license to continue to use the software.

Essential Components - licenses a single Resco Power Component for use in 1 app in 1 production environment for 1 year.
Professional Library - licenses all Resco Power Components for use in an unlimited number of apps in 1 production environment for 1 year.

RESCO Power Components are licensed on an annual basis, with rights for internal use only and limited to a specified number of users. 1 Year of standard support and product updates is included.