Power Apps is a product of the Microsoft Power platform. The Power platform also includes Power-BI, Power Flow. Microsoft promotes it as a stack.
Power Apps is service-oriented application used for developing custom apps for organizations. It simplifies the development cycle of the business apps and equips the business users & developers to build custom native mobile & web applications.
The user-friendly interface of the Power Apps helps us to create apps quickly and as per the business demand. Through Power Apps templates, we can customize our applications. The approach is so easy to understand for end user also.