A web application is software or a program that can be opened using any browser. The external interface of a web application is developed using the following programming languages: HTML, CSS, Javascript, which are supported on any browser (Opera, Chrome, Mozilla, Yandex). At the same time, any other programming language or framework can be used to write the back-end, such as Python, PHP, Ruby, Java.
The main advantages of web applications:
- web applications can be used on any operating system (Linux, Mac, Windows), as they all support modern browsers;
- due to the fact that a web application uses the same code as a desktop application, it is much easier to maintain;
- the application is easier to program because it does not involve a lot of work with PC elements (kernel, processor, video card);
- unlike mobile applications, web applications do not require approval from any platforms to release their program;
- web applications are a more economical option for any enterprise
- because web applications do not require subscriptions or licenses, but can be used as a SaaS service, which is much cheaper.
How the web application works
Let’s take a closer look at how the web application itself works. The user creates a request that will have to be sent to the web server using a request in an Internet browser or in the web application itself.
Then this request should be sent to the web server assigned to this web application. After the server receives the request, it goes to the database to generate a response to the user’s request. The final stage is sending the necessary data to the front-end of the application and then displaying it to the user.
And so it repeats over and over again as long as the user creates requests in the web application. It is worth noting that the more and more complex the requests are, the longer it will take to send a response from the server.