Affiliate program for a digital service?

Hi everybody.
Lately I started wondering.
I see all the time so many affiliate products and affiliate programs.
Using affiliates as a way to promote digital products is huge today, thats for sure.
Lately I started wondering if I can harness the power of affiliate to promote the services I am offering, however, I mainly sell digital services (web design, marketing material design, explainer video creation).
In this kind of business, each sale can be 100$ - 1000$ and more. Some of the digital services I offer actually have fix price (some are custom made, depends on the project).
But somehow, when I looked for some in-depth info about this kind of idea, I couldn't find any. Do you know any good platform that deals with this kind of things? A way to do it without having to invest huge sums upfront? (people offered me to look into share a sale, but the upfront costs were pretty big....)
Or maybe other ways that are similar, to take advantyage of the powers of marketers around me and let them sell for me, sharing my revenue with them?

Thanks everybody!