This presentation vividly describes what is going on in the IT industry with the advent of cloud technology, focusing in Google App Engine. Then reviews competitors’ moves both in terms of background technology and the service capitalization. It was revealed that major Japanese companies such as Fujitsu and NTT Data are introducing Microsoft Azure in their data centers, but Oracle and IBM are the technically strong chasers. So far there are very few moves for Japanese IT companies to implement their own cloud products. IBM's zEnterprise product line has potential to replace and wipe out container-based data centers, but their pricing policy unknown. Oracle's next hardware strategy unknown. In Japan, tailoring open-source softwares auch as Cassandra and Hadoop found at newly rising companies, IIJ, and Rakuten.