What is a Web Application?

A web application is a computer program that utilizes web browsers and web technology to perform tasks over the Internet.

Overview

Web applications use a combination of server-side scripts (PHP and ASP) to handle the storage and retrieval of the information, and client-side scripts to present information to users. Millions of businesses use the Internet as a cost-effective communications channel. It lets them exchange information with their target market and make fast, secure transactions.

In addition, the applications allow employees to create documents, share information, collaborate on projects, and work on common documents regardless of location or device. However, effective engagement is only possible when the business is able to capture and store all the necessary data, and have a means of processing this information and presenting the results to the user. This allows users to interact with the company using online forms, content management systems, shopping carts and more.

How a web application works

Application server technology ranges from ASP.NET, ASP and ColdFusion, to PHP and JSP. The web application requires a web server to manage requests from the client, an application server to perform the tasks requested, and, sometimes, a database to store the information.

Web applications are usually coded in browser-supported language such as JavaScript and HTML as these languages rely on the browser to render the program executable. Some of the applications are dynamic, requiring server-side processing. Others are completely static with no processing required at the server.

Here's what a typical web application flow looks like:

• Web server responds back to the client with the requested information that then appears on the user’s display.
• Web application server sends results to the web server with the requested information or processed data.
• Web application server performs the requested task – such as querying the database or processing the data – then generates the results of the requested data.
• User triggers a request to the web server over the Internet, either through a web browser or the application’s user interface.
• Web server forwards this request to the appropriate web app server

Example of a web application

Web applications include online forms, shopping carts, word processors, spreadsheets, video and photo editing, file conversion, file scanning, and email programs such as Gmail, Yahoo and AOL. Popular applications include Google Apps and Microsoft 365.

This lets all team members access the same version of a document simultaneously. Google Apps for Work has Gmail, Google Docs, Google Sheets, Google Slides, online storage and more. Other functionalities include online sharing of documents and calendars.

Benefits of a web application

Web applications run on multiple platforms regardless of OS or device as long as the browser is compatible

• They reduce software piracy in subscription-based web applications (i.e. SaaS)
• They are not installed on the hard drive, thus eliminating space limitations
• All users access the same version, eliminating any compatibility issues

Conclusion

Web applications give businesses the ability to streamline their operations, increase efficiency, and reduce costs. Increased Internet usage among companies and individuals has influenced the way businesses are run.

This has led to the widespread adoption of web applications as companies shift from traditional models to cloud-based and grid models. These online apps such as email clients, word processors, spreadsheets, and other programs provide the same functionality as the desktop versions.

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