No one has a crystal ball into the future. All of us are required to make decisions under uncertainty. The most difficult ones are the ones that can have a big impact one way or another in the long term. How do you decide if it's better to buy or build? When do you use open source vs developing proprietary technologies? How and when do you change a decision like this from the past? And how do you scale this kind of decision making across a company? Join Parag Agrawal, CTO of Twitter in this fireside chat, where he will discuss his personal experiences scaling these kinds of decisions in companies both large and small.