Every year, enterprises lose millions of dollars to website sluggishness and downtime — most of it in the form of lost revenue. Slow or unavailable sites and apps also negatively impact internal productivity and degrade search engine rankings. These performance and reliability problems can be caused by numerous factors, including:

• Overworked or unhealthy servers
• Geographic distance between end users and servers
• Slow DNS resolution times
• Distributed denial of service (DDoS) attacks
• The type of device a visitor uses to access the Internet.