This document discusses lessons learned from successful partnerships between Product Managers (PM) and Product Marketing Managers (PMM) from Zendesk's Director of Product. It identifies common challenges like lack of alignment on problems and measure of success. It outlines the typical range of tasks for PMs like roadmap and feature prioritization versus PMM tasks like launches and messaging. Benefits seen include different ideas generated and focus on work not roles. Questions are provided to strengthen PM-PMM relationships like investment in the relationship, role understanding, and overlap opportunities. Alignment and reducing handoffs while keeping the customer central is advised.