You can use software-as-a-service (SaaS) marketplaces to streamline SaaS buying, simplify contracting and vendor management, and reduce risk by doing pre-vetting of solutions. But to realize these benefits, you'll first have to select from a diverse set of vendors that vary by size, functionality, geography, and vertical market focus. Application development & delivery (AD&D) professionals should use this report to understand the value they can expect from a SaaS marketplace provider and to select one based on size and functionality.