Composer required to update modules

I was updating some of the modules.
One of them (svg_image module) requires additional modules which can only be installed through composer.
Am I supposed to setup composer for this?
Do I need to follow this guide? Adding local modules through Composer [RECOMMENDED]

Hi @emterman, yes that’s right.

We are working to polish the user experience of this workflow. It will become substantially easier from the end of next week, when we expect the new Webservices portal released, making the creation of test sites a one-click process.