The presentation summarizes Movile's big move to Apache Cassandra from relational databases for three key systems:
1) The subscription and billing system to improve performance, availability, and scalability.
2) The Kiwi user platform to reduce costs and improve throughput.
3) Distributing shared resources across a Cassandra cluster to improve scalability and reduce hardware costs.
The moves resulted in significant cost savings, throughput increases, and more scalable architectures.

Cassandra Summit 2015 in San Francisco, California, US

Slide deck link:
https://www.slideshare.net/eitikimura/cassandra-summit-2015-a-change-of-seasons