You've built a product, but how do you take it to market? And who even wants it? To answer that, we've set up a unique call between an entrepreneur and an expert. Birna Dröfn Birgisdóttir built a brainstorming tool called Bulby, and is now ready to take it to market — but isn't sure who her ideal customer is. She gets advice from Brent Tworetzky, SVP of Product at Peloton, who has decades of experience building consumer and SaaS products.