Google made the first move cutting prices of its standard Google Cloud Storage by 20% and then followed it up with another 10% cut after Amazon followed up by reducing the prices of its S3 cloud storage services by about 25%.

FORBES: Amazon And Google At War Over Cloud Storage Prices

Google has launched a cloud-based storage service called Google Drive that competes with Dropbox, Sugarsync and other cloud storage systems to offer both free and paid storage that synchronizes with PCs and Macs.

FORBES: Hands-On with Google Drive Cloud Storage Service

As you'd expect, Keep is integrated with Google Drive, the cloud storage service Google wants anyone who uses anything it makes to use.

CNN: Meet Keep, Google's answer to Evernote