How do you decide if a SaaS idea is actually worth building?

I keep seeing SaaS ideas that sound great on paper, but I’m wondering how founders validate them before spending weeks or months building.

Do you usually:

• Talk to potential customers first?
• Post the problem on Reddit/communities?
• Build a small MVP?
• Create a landing page and collect signups?
• Or just build and see what happens?

What has actually worked for you when validating a SaaS idea?

Author: mrjaspergames