One thing you must always keep in mind while choosing a digital partner.
You should always check their previous projects and their growth ratio of their previous projects & even the planning, execution and the creativity part.
One who would know what kind of marketing strategy runs best in his country. For example in Canada, Facebook (80%) and LinkedIn (45%) are the most popular media platforms and one who would know which media outlet to contact in their specific niche. If you need help with local SEO services in Canada, you should definitely check out: https://www.webmobileseo.com/
Webmobile SEO is a Brampton SEO company focused on providing Local SEO services in Mississauga, Brampton, Toronto, and Caledon.
Bringing businesses on the first page of Google is their specialty.
They have to be knowledgeable about local channels and rules. For example in Asia especially Japan Yahoo is more popular than Google as a search engine.
It depends on what you are looking for. Try to find the partner that meets you needs and can do it at the quality and level you desire. I'm sure you can find one one mosiacHUB.