AWS Marketplace now supports viewing agreements and canceling and extending offers for Professional Services

AWS Marketplace sellers, including Independent Software Vendors (ISVs) and consulting partners, can now view agreements, cancel offers, and extend offer expiration dates for Professional Services from the AWS Marketplace Management Portal (AMMP). Professional Services in AWS Marketplace enables ISVs and consulting partners to create new Professional Services listings in AWS Marketplace and extend Private Offers to AWS customers. 

Source:: Amazon AWS