Providing temporary access to non-downloadable cloud-based software, for use by broadcasters in the field of terrestrial, cable, satellite and Internet television broadcasting for managing media advertising inventory availability, managing media advertising proposals, managing media advertising orders and validating delivery of media advertising orders; providing temporary access to non-downloadable cloud-based software, for use by broadcasters in the field of terrestrial, cable, satellite and Internet television broadcasting for generating pricing for media advertising inventory for media advertising proposals; providing temporary access to non-downloadable cloud-based software, for use by broadcasters in the field of terrestrial, cable, satellite and Internet television broadcasting for controlling multi-layer approval of media advertising proposals and media advertising orders; providing temporary access to non-downloadable cloud-based software, for use by broadcasters in the field of terrestrial, cable, satellite and Internet television broadcasting for analyzing the performance of media advertising campaigns; providing temporary access to non-downloadable cloud-based software, for use by broadcasters in the field of terrestrial, cable, satellite and Internet television broadcasting for integrating the functionality of media business management computer software with third party platforms.