At the earliest stages, you should just be identifying the problem. Interview general folks in your industry and ask, 'would you like a simpler XXX'. 'what is the most painful ZZZ'. 'what would get you to try a new service'.
From that small set, draw up your idea and re-interview those folks. if they like it, you should present the same drawings to a wider scope and see if it still has gravity.
The next step is to test the market and publish your solution through adsense . I'm unaware of another method to test an idea as well as adsense. it would be great to hear some other ways of testing an audience before building.