I've used this slide in many product management talks to illustrate the cross-functional and multi-lingual challenge of product management: provide related but distinct inputs to three key stakeholders.

1. Product Management Executives Development What Does a Product Manager Do? strategy, forecasts, commitments, roadmaps,competitive intelligence budgets, staff, targets market information, priorities, requirements, roadmaps, MRDs, personas, user stories… Field input, Market feedback Mktg & Sales Markets & Customers software Segmentation, messages, benefits/features, pricing, qualification, demos…