Everybody needs a website, and companies need a web application to power their business. A typical web application contains: - Front-end: What your users see and interact - Back-end: Everything behind that scene that powers the website - Database: Where your data is stored - Server: Where your web application is hosted and run from A web application is different from a website. A website is a collection of files that are served to a web browser. Where a web application, especially the modern ones, have the ability to function like a desktop software, that allows us to manage our mailbox, write codes, and even perform graphic design.