4th of July Sales Still Going Best Mesh Routers Should You Buy a TV on Prime Day? Dell's 'Black Friday in July' 50% Off at Skillshare Save on TCL's Android Tablet Best Office Chairs Verizon 5G Home Internet Review

Amazon buys three companies

The e-commerce giant grows bigger, acquiring Exchange.com, Alexa Internet, and Accept.com.

Amazon.com today said it agreed to buy Alexa Internet, Exchange.com, and Accept.com, an Internet triple play that will greatly expand its business, sources said.

Amazon is spending a total of $645 million for the three privately held companies. An announcement concerning the deals, expected to close by June 30, is expected later today.

Exchange.com operates the popular Bibliofind.com, a seller of used and antiquarian books, as well as Musicfile.com, which features music memorabilia and rare recordings. Amazon said this will add more than 12 million book and music items for sale.

Alexa Internet offers a free advertising-supported Web navigation service.

Accept.com is an e-commerce company developing technology for business and consumer transactions on the Internet.