Azure Monetary Commitment is the upfront payment an Enterprise Agreement customer makes for use of the Azure consumption services, which is then decremented on a monthly basis as the services are used. This is now renamed to Azure prepayment but there are no other changes in terms of how it works. Find the Azure prepayment section starting on page 53 of the July 2020 Product Terms, and download the document itself here: http://bit.ly/MSproductterms.
Azure Cost Management is a set of tools that helps customers and partners to feel in control of their spend on the Azure consumption services. Features are continually being added to this service and the February updates include new Power BI reports for EA customers, and greater visibility into the individual meter costs that make up the total cost for a resource. Find the update here: http://bit.ly/3aLFHPP.