A lot of startups are consumer focused and there's a lot of 'how to your first 100 users' material, but how do you get leverage in a B2B space? Finding a custom

A lot of startups are consumer focused and there's a lot of 'how to your first 100 users' material, but how do you get leverage in a B2B space? Finding a customer to validate and work with your idea. Ideally, the customer is from a previous service or maybe someone you know, but that's not always the case.