In this era of AI, machine learning and IoT, APIs are playing a crucial role in enabling these complex technologies provide intelligent and seamless user experience. APIs are emerging at a rapid pace. The current metrics show a market of 20 billion connected devices around the world, and this number is forecast to grow more than 50 billion by 2020. All these devices are connected through APIs, which makes it a raw material for the connected world. Many leading web applications are moving their web experience toward APIs because the independence and modularity of APIs are helping to speed-up development processes and improve productivity in complex technologies. About a few years ago, the trend was mobile first, followed by web, and then came the APIs. Today, the trends have inclined towards APIs first, then mobile, and finally the web. This shift has driven us towards making API testing the theme of this newsletter for our readers.