1. Domain Knowledge
   1. Legislation
   2. Industry standards
   3. Competitor analysis
      1. Direct competitors
         1. Realization of a similar feature
      2. Indirect competitors
      3. Other products that have similar mechanics
         1. for inspiration
2. Company Standards
   1. General corporate culture and environment
   2. Internal rules and policies
   3. Internal design system
   4. Other products of the company, if customers interact with them
3. Stakeholders, Clients and Users
   1. Segments and Target Audience
      1. User personas
      2. Needs
   2. Interview
   3. Feedback
      1. Feedback forms
      2. Statistics Data
         1. Product heatmap
         2. Session recordings
      3. Social medias and forums
      4. data from Help Desk service
         1. statistics
4. UX research
   1. Hypothesis analysis
   2. CJM
   3. Vpc
   4. UX research data
5. Project & Team
   1. Architecture
   2. Similar features
   3. Similar mechanics
   4. Design system
      1. UI
   5. Matrices
      1. Risk
   6. Bug tracker
   7. Wiki
   8. Standards and Security Policies
   9. Third-party libraries
   10. Team members
6. Involved services of 3 persons
7. Marketing data
   1. Advertising companies
8. It will be interesting
   1. Back to basics: sketch, wireframe, mockup, prototype
      1. https://www.xmind.net/m/XTqvqF/
   2. Let's cook a new feature
      1. https://www.xmind.net/m/6HxCaW/