The move comes a year after the Seattle-based e-commerce giant added 3 million square feet in distribution center capacity, noted Patty Smith, a spokeswoman for Amazon.com. She did not give a timeframe for shutting down the distribution centers in Red Rock, Nev., Chambersburg, Pa. and Munster, Ind.

"We regularly evaluate our fulfillment network," said Smith. "We think this will better able us to balance ... the right mix of products close to the customers."

The spokeswoman said that all the workers at the three locations have been offered jobs at other Amazon facilities across the country. She pointed out that there are two other distribution centers in Indiana that could house workers from the Munster offices.

"There are two things in play here," said Dan Olds, principle analyst with the Gabriel Consulting Group.

"The first is that even successful and profitable companies are constantly fine tuning their operations, like adding and shutting down distribution centers. This is not necessarily a signal that their business is weak. Even solid companies are constantly adjusting and optimizing their operations," he said.