The Remote Desktop Connection is used to:

Searching the Internet is a function performed by a web browser, not the primary purpose of Remote Desktop Connection.

Attending a webinar typically involves specialized conferencing software, not a direct remote desktop connection to another computer.

Remote Desktop Connection allows a user to connect to and interact with the graphical desktop of another computer over a network. This enables the user to control the remote machine's applications and files as if they were physically present at that computer.

Conducting a Lync (now Skype for Business or Microsoft Teams) Online Meeting is a communication and collaboration function, distinct from directly accessing another computer's desktop.