In Forrester’s evaluation of marketplaces for software as a service (SaaS) sourcing, we identified the nine most significant providers in the category — ADP, Amazon Web Services (AWS), Atlassian, Microsoft, Oracle, Sage, Salesforce, SAP, and ServiceNow — and evaluated them. This report details our findings about how well each vendor scored against 10 criteria and where they stand in relation to each other. Software buyers and technology leaders can use this report to select the right partner for their SaaS sourcing needs.