APIs are a key foundation of digital transformation: they enable mobile apps, create integrated digital ecosystems across customers and partners, allow firms to benefit from the innovations of digital disruptors and drive operational excellence. Forrester created a 27-criteria evaluation of API management solution providers and identified the 14 most significant providers of such solutions. Forrester researched, analyzed, and scored them. This report shows how each provider measures up and helps application development and delivery professionals make the right choice for their environment.