The Business Model Canvas is a very  popular tool developed by Alex Osterwalders and available publicly to help you easily see on one page how  startup will look like. 

It uses 9 segments plus 2 if you care about sustainability 

 It is a one page  business model that  describes the rationale of how an organization creates, delivers and captures value. 

It can be described through 9 building blocks: 

1. Customer Segments,

2.  Value Propositions, 

3. Channels, 

4. Customer Relationships, 

5. Revenue Streams, 

6. Key Resources, 

7. Key Activities, 

8. Key Partnerships & Cost Structure. 

9. Customer Segments, 

Plus two if sustainability is important for you 

10. Economic and social benefits 

11. Beneficiaries  or positive impact you have on your staff and community 

Using Trello Business model Canvas a free app you Add cards under each list as you define your criteria.