There are millions of web applications that help companies deliver their goods and services, connect with customers, and increase user engagement. As they provide higher scalability, improved flexibility, and simplified maintenance compared to desktop solutions, now they are much more popular.
Web apps are available online, so users don’t have to install them (sometimes you need just to download only a small product part like in the case of Slack or Skype, for example) on their personal computers and laptops.