"Why would Microsoft want to buy Limelight, the unprofitable No. 2 player in the CDN business behind Akamai? It's indeed puzzlement. Here's one explanation," write Blodget. "Microsoft's entire business infrastructure is built around desktop servers and PCs. The entire business infrastructure of Microsoft's most fearsome competitor Google, meanwhile, is built around the wave of the future - "cloud computing" - in which millions of devices interact with vast data centers and server farms out on the network."