 WTOP at 540. Money News 10 and 40 past the hour. Let's go to Jeff Claybaugh. Amazon built its empire with online shopping, but now it's about cloud computing. It'll spend $100 billion on data centers over the next decade. Amazon Web Services has spent $370 million buying data center land in northern Virginia just this year. An annual list of the 10 cities where the highest cost of living is out. D.C.'s number 9.