What's the Difference Between Amazon and Twitter?

I like the scrappy start up stage of useof research at something that's been a big part of my career, and just like to hear about how it happens at other places. Doing user research in those environments changed a lot to doing uno user research and experimentation in larger scale environments like amazon or twitter. I was really excited to get closer to young customers, people who were developing their identities and using some of these types of apts to stay connected to family, friends and their communities. And so i really dove into understanding the user needs and the customer needs of some of those segments  and how we could build better products for them.