Question 1

Where do we start?

Accepted Answer

With a conversation about the problem you want to solve. From there you get a proposal for a first, small version that is useful right away.

Question 2

Who owns the software?

Accepted Answer

That is agreed upfront in the quote, so you know exactly where you stand.

Question 3

Can you maintain and extend it later?

Accepted Answer

Yes. Maintenance and new features are possible after launch.