Milestone 1: User stories and problem definition

Sub-milestones:

Milestone 2: User story mapping and prioritization [partially already complete in Milestone 1]

Milestone 3: Approach speccing

Milestone 4: Wire Framing and user journey definition

Milestone 5: Tech/arch Prototype

Milestone 6: Product Requirement Documentation*

*As the scope of this project evolved, PRD will be focused on Phase 1 and Phase 2, which future PRD work to follow incrementally.