Max is an imprint of Marvel Comics that specializes in comic book media aimed at adult-only readers. It was launched in 2001 after Marvel broke with the Comics .
Honestly all Marvel Comics not marked as kid titles (usually you can tell these by the lower price and/or cartoon style that would accompany an animated tv show.
Marvel's MAX imprint is typically the place the company turns to whenever they want to publish a more adult-oriented comic. Because of this.
But long before Jessica Jones was changing Marvel on screen, she marked Illustration for article titled iAlias/i Was Marvels First Adult Comic.