Features: It has API program tools with the features of access control, analytics, rate limits, security, dashboard etc. There are multiple options for traffic control like open source gateways, hosted cloud service, plugins, CDN options etc. Best for: Its developer portal. The API is the interface that, like your helpful waiter, can be asked by that online travel service to get information from the airline’s database to book seats, baggage options, etc. The API then takes the airline’s response to your request and delivers it right back to the online travel service,