What's the difference between ' VSPro 2015 SNGL OLP NL ' and ' VSProwMSDN ALNG LicSAPk OLP NL Qlfd ' ?

The short form acronym states, What type of liscence that version holds With MSDN or with out MSDN Single User or Multi User Qualified Level or not Discount Level or not VSPro 2015 SNGL OLP NL: Microsoft Visual Studio Professional 2015 SNGL OLP NL VS Pro 2015 Single Licence, Open Licence Program, No Discount Level VSProwMSDN ALNG LicSAPk OLP NL Qlfd: Microsoft Visual Studio Professional w/MSDN All Languages License/Software Assurance Pack OPEN 1 License No Level Qualified Note : Cost differs for both the versions. Mark as answer, if helpful.