Avid Media Composer Software will introduce 3 types of Licenses. -Subscription Licenses (RENT the software)-Perpetual Licenses (OWN the software)-Floating Licenses (SHARE the software)This is of course a very simple way of explaining it... You can find more details here:Media Composer Licensing Options:http://www.avid.com/static/resources/common/documents/datasheets/Media_Composer/Media_Composer_License_Comparison_Guide_cs_A4.pdfFloating licenses:http://www.avid.com/static/resources/common/documents/datasheets/Media_Composer/Floating_License_cs_A4.pdfMedia Composer Licensing FAQ:http://avid.force.com/pkb/articles/en_US/faq/Media-Composer-8-FAQ?popup=true&NewLang=en&DocType=1079