In our series “Amazon: The Prime Effect,” we take a look at how the $1.6 trillion company is changing everything about how we live, work and shop.

Amazon’s size and influence over e-commerce has drawn criticism from advocates – for its contribution to the decline of local brick-and-mortar retailers. It’s also drawn scrutiny from regulators. But none of that has dampened Amazon’s ambitions.

Dharmesh Mehta is Amazon’s vice president of worldwide customer trust and partner support. In this web exclusive, we speak with him about the Amazon marketplace, third-party sellers and how customer data is used.