App developers can quickly reach their subscribers using the API-first solution. … This strategy allows you to build, deploy, and manage all aspects of the mobile lifecycle using one source, an API Backend as a Service.

APIs allow applications to be connected to each other to execute predefined functions. They act as a middleman, allowing developers to create new programmatic interactions among the many applications that people and businesses use every day.

Good APIs think through their developer experience and provide clear, concise, and easy to understand documentation. It helps developers think through everyday use cases and what the actual user of the API will need.

1. Katalon Studio. Katalon Studio provides a free automation tool for APIs, web apps, desktop apps, mobile applications, and more. It has quickly become a popular tool for API/Web service testing. It is marketed as an end-to-end automation solution to developers and testers.

To make developers’ lives easier, major tech companies like Amazon and Google create their own APIs. Telestax and Twilio are two examples of companies that have built their businesses around providing a variety of APIs to meet different needs.