Google Cloud BigTable is accessible through the industry-standard, open-source Apache HBase API, which makes it natively integrated with much of the existing big data and Hadoop ecosystem.
Google Cloud Bigtable is now available as a beta release in multiple locations worldwide. Google also announced a number of service partners to help enterprises, including SunGard, Pythian, CCRI and Telit Wireless Solutions.
http://googlecloudplatform.blogspot.com/2015/05/introducing-Google-Cloud-Bigtable.html