Add revenue streams

[olibrian]

I like the canvas very much. Nice to have an open source variant. But what I miss is a sections for the revenue streams. A successful project has besides the costs also hopefully some (small) revenue streams. This helps to ensure a long-term and sustainable existing.

[AloisReitbauer]

@olibrian would you add this to the business value section?

[olibrian]

I would suggest integrating this into the business value section or, even better, generating a separate block.