So you built a SaaS, but how do you guys market your saas?

Simple plain question, you built the best of the best saas, but how do you go about marketing?
I've been experimenting in gdev to saas to marketing of saas, and ive grown into the marketing side of things.

I'm still learning and applying practices in marketing even though i have a decent UA experience in gdev b2b, and would love to know how did you guys do it?

Also, do you guys hire outsider marketer or a team to take over if you have the budget or is it all DIY?