Web app development is a building of application programs which resides on remote servers and delivered to the user’s device over the Internet. A web application (web app) does not require to download on a device and can be accessed through a network. An end user can access a web application through a web browser such as Google Chrome, Safari, or Mozilla Firefox. Client-side programming is used to power the user interaction with the application. Client refers to a computer application such as a web browser. Server-side programming is used to give some power to client-side programming by using the scripts which makes the web application working. Scripts can be written in multiple scripting languages such as Ruby, Java and Python.
To make thing more efficient Web Application Frameworks are used for combined features of programming libraries, components and tools which are organized in such a system which allows developers to build and maintain complex to complex web application projects using a fast, efficient and systematic approach.
Here are few examples of web app development are online banking sites, social networking sites, eCommerce applications for shopping, online Training for traveling in the train, Blogs, Online Forums, Content Management Systems, Online Reservations etc.
It is cross-platform and can run on Linux, macOS, and Windows. This opens up many new options for both development and deployment for the applications
It support unit testing, and their loose coupling and support for dependency which makes it easy to swap infrastructure concerns with fake implementations for test purposes.
Web applications can be written using simple text editors and command-line interfaces or any full featured development environments.