The Amazon EC2 Java code sample created by Tom White, provides a zip file with a MapReduce application to analyze a large collection of web access logs. Amazon EC2 is a service that allows the storage of applications in a private and secure cloud.
Gracenote "touches hundreds of millions of music fans and TV viewers everyday. The Gracenote database is the largest source of music and video metadata on the planet, featuring descriptions of more than 130 million tracks and TV listings for 28 countries." Recently, Gracenote launched a developer program that opened its Gracenote API to the developer community. The API delivers Gracenote's rich music metadata to any connected app.
In 2008 when Netflix announced plans to move to the cloud, most observers were dubious. Now Netflix has become one of the first major companies to exist completely in the public cloud and their architectural shift to cloud based microservices led to many successes in performance and scalability.