Millennial Media is a mobile advertising platform company targeting mobile consumers, application and media developers, and mobile operators. To streamline operations, they needed to consolidate multiple Hadoop clusters into a single footprint. And they also needed to segregate data to put better controls around the environment. Millennial Media and Jumptap had previously used Hadoop. After evaluating MapR and other commercial Hadoop solutions, they recognized the significant benefits of MapR. The main reasons that Millennial Media chose MapR include: multi-tenancy, high availability and better performance. The results of implementing MapR were reduced operational costs, improved system uptime and reliability and faster performance.