RingCentral has strong security controls, financially backed 99.999% SLAs, and a 16+ quarter proven track record of reliability. With less than six minutes of downtime every year, we deliver on our reliability promises and maintain the highest uptime among industry leaders. In short, we actually deliver on our reliability promises. Cisco only advertises 99.99% SLA in comparison—this could be as much as 52 minutes of outage per year.