Hey guys! I need some help with viewer node in shading mode

In a tutorial, which was in an older version, I saw a node called viewer, but when I look for it, it does not exist. Can anyone help me with this? What is the name of that node now? Or what has changed?

You can activate it by clicking with the left button of your mouse (on the node you want a viewer) while holding Shift and Ctrl

forgot to say you have to enabled the “Node Wrangler” Add-on :

Thanks, for your help. I need this for an environment, for corals.