The lean startup movement talks about starting with a minimum viable product: the product with just the necessary features to get money and feedback from early adopters.
Although typically applied to tech businesses, it can work for other businesses too. What is the simplest product you can get out there to test customer demand?
The advantage of this approach is that you can find out early whether people will buy your product or service and what features they want. Then you can use this information to build a more fully featured product as your next version. It also can save you time and money in proving your business idea is viable.
This approach doesn’t work for every business but it will for many. How can you apply it to yours?