A little bit of history first. WhatsApp was launched in 2009 by two former Yahoo employees and they started this app as a small start-up. Within a year, they were bought over by Facebook for an estimated 20 Billion USD. Aside from that, there hasn't been a turning back since then.
WhatsApp is one of the most popular cross-platform messaging apps, and it's straightforward to set up a free account. Moreover, once you're signed up, you can use the WhatsApp Web service to answer message notifications and read chats via your computer browser.
WhatsApp is a Facebook-owned application that allows users to exchange messages, videos, images, and other content over the Internet. WhatsApp Web will enable you to send and receive WhatsApp messages directly from your desktop/laptop's browser.
You need an active WhatsApp account to use the WhatsApp Web. You don't have to download any app or software to check your WhatsApp messages later when you're at work. And it works almost everywhere, including Windows, Mac, or Linux operating systems.