WIP: Proposed product development framework structure

Why is this change being made?

Clarify required vs recommended process for cross-functional product teams to leverage as they work toward outcomes rather than outputs.

Please note this is a proposed structure for product development framework. Content is not final/complete and missing all together in some sections (especially for Build and Iteration cycles). Process/content will be leveraged and ported over from product development flow. This page is also not yet designed.

Related to Product#881 (closed)