Hello Johann
The webvpn feature being used in this particular lesson is applied on a Cisco ASA. The ASA is a firewall device.
However, WebVPN is also available on Cisco IOS devices. However, you must remember that WebVPN is an end-of-life technology, and has been replaced with FlexVPN. That means you won’t find it on some platforms such as the c1111 as described in this Cisco community post.
For more information about FlexVPN, take a look at this lesson:
I hope this has been helpful!
Laz