It sounds like the kind of profession that people make up for themselves when they don’t actually know what they’re doing.
Calling yourself a digital marketing consultant can sometimes mean you will post an update a day on social media, or you’ll put together a new website, or you’ll write and send out email newsletters.
There are a lot of them about. If you’ve typed digital marketing consultant or digital marketing agency or online marketing agency into Google you’ll know this already. Perhaps that’s why you’ve ended up on this page.