You will need to demonstrate a clear market gap, supported by evidence that you have validated the problem you're solving, the customer segment you're targeting and the solution you're working on. The application form will ask you about the methods (e.g deep dive interviews, pilots, surveys) and the scale of your validation (how many potential customers you have spoken to). We also expect some proof of traction (early customers or revenue, wait lists, customer engagement) and consideration to your business model (how you will make money).