Pandora is the leading Internet radio service, streaming personalized music and comedy to tens of millions of listeners worldwide based on each user's individual preferences. Their challenges are to scale to tens of millions of users without decline in performance, serve all application nodes with one load balancing solution and perform application server maintenance without specialized scripts. They chose F5 Networks to overcome these challenges. They have implemented BIG-IP systems, BIG-IP 6400 devices, BIGIP 8900, VIPRION and BIG-IP Global Traffic Manager. The results of implementing F5 Networks were scales to serve tens of millions of users, deliver superior uptime, ease server maintenance and improve performance, resulting in Pandora top ranking in speed and reliability.