Yes. Visio is still a thing. To draw expressive diagrams with the correct visual representation of the underlying services you need to have access to quality stencils.
There is the Microsoft Azure Cloud and AI Symbol / Icon Set - SVG from Microsoft of course but I stumbled across a LinkedIn post from David Summers today where he shared his own additional set of stencils for Azure.
Head to his GitHub account and check it out:
Visio stencils for Azure services