https://www.techradar.com/news/google-to-begin-rolling-out-android-messages-for-the-web-from-today

Starting today, sending and receiving SMS and RCS (Rich Communication Services) text messages from a computer will become easier for Android users, with Google officially rolling out its Android Messages client for web after months of rumors.

Working in a similar fashion to the web version of its own Allo messaging service, users can now visit the Android Messages website to generate a unique QR code which will eventually be linked to the Messages app on their handset.