All business ideas are about solving a problem.

The problem could be that a process takes too long.

It could be that something is too difficult or hard to define.

It could be that something requires a lot of resources that are too expensive to procure for a single person.

Sometimes a problem is something the customer doesn't know they have.

So businesses are formed to solve problems.

But solving the problem isn't enough on its own.

What sells a business' products is the customers perceived value of the solution.

They need to know about it and they need to believe it will benefit them.

This is the principle that should guide product development, especially for startups.