EarthLink offers colocation and data center services that allow businesses to retain control over their applications and infrastructure without the upfront costs and burden of building and maintaining their own data centers. Their services include space in tier 4 and SAS 70 Type II audited data centers with redundant power, cooling, and networking and a 99.999% uptime guarantee. Businesses can choose managed colocation services with monitoring and support or bring their own servers and hardware to leverage EarthLink's infrastructure and support options. EarthLink's services are designed to provide security, reliability, flexibility and efficiency to businesses.