Investing time in defining and finding your perfect audience is one of the best investment of your time you'll ever make. 

Just putting your product or service out there and hoping the right people see it is just a waste of your time and money. There are really two big problems in skipping doing thorough audience research:

1. You’ll design and explain your product in a more general way which makes it harder to relate to for your perfect customer, and for any customer really. Nobody wants 'average' or one size fits all.
2. Your spending money getting in front of people that are not your target market and thereby reducing your ROAS (return on ad spend) as well

There are different ways to approach this.

1. Market analysis -> Segments -> Pick a niche -> Perfect customer profile
2. Analyse customers -> Profitable segments -> Survey -> Perfect customer profile

In this case, we’ll assume you don’t already have an audience or lots of profitable customers....