A Web app is an online software. That is accessible from browsers such as Google, Safari, Firefox, etc. This means it is available everywhere there is internet connection.
Web apps’ ancestor was a 2000s software sold on CD and installed on PC data storage. This is an obsolete technology; nowadays the device is no longer a limit.
If developed to adapt to operating systems such as Android and iOS, the web app is available also on smartphones and tablets through the associated mobile app. Whatsapp, for example, was born as a mobile app but then a browser web app was integrated to it.
A company can use a web app as an online management software, regardless of the economic sector. Any company can make use of a web app to organize, to standardize or to automate different activities.
Following some example of web app applications in business functions: