What is the difference between DC and FC's?

Distribution centers move millions of units in bulk to a few destinations, fulfillment centers process countless individual units one-by-one to many different addresses.

How will these affect the local traffic, noise and environment?

During peak sales seasons Black Friday, a fulfillment center can flex capacity using part time labor and automation to process thousands of individual e-commerce orders. 

In contrast, a distribution center will continue to operate at scale but lacks the nimbleness for dynamic order surges.