The TeamViewer Host for Raspberry Pi is a system service that allows for the unattended access of Raspberry Pi devices so that they can be maintained, controlled, or managed with our industry-leading TeamViewer solution, familiar to millions of users around the world.
Before we had to use an application as Exagear Desktop to be able to connect our Pi with TeamViewer, but it's no longer necessary, since it has a native application for that mission. If you want to install it, execute the following instructions:
sudo apt install -y wget https://download.teamviewer.com/download/linux/teamviewer-host_armhf.deb sudo dpkg -i team*.deb apt-get -f install
Nothing else to add. You have many options to customize the program and once installed, you will always have it available at each system boot.