Towards SLA-Driven API Gateways

As APIs are becoming popular to build Service-Based Ap- plications (SBA), API Gateways are being increasingly used to facilitate API features management. They o er API management functionalities such as pricing plans support, user authentication, API versioning or response caching. Some parts of the information that an API Gateway needs are already included into a Service Level Agreement (SLA), that providers use to describe the rights and the obligations of involved par- ties in the service. Unfortunately, current API Gateways do not use any SLA representation model nor SLA underlying technology, thereby miss- ing potential opportunities. In this paper we analyze the state of the art to justify the current situation and we identify some research challenges so as to achieve SLA-Driven API Gateways.