We own our entire hosted Exchange environment and manage it ourselves out of multiple, world‐ class datacentres in Central London and Glasgow with http://www.interxion.com/Services/Colocation/.   Our datacentres offer a state‐of‐the‐art environment, with raised floors, climate control, fire‐suppression systems, and Uninterruptible Power Supply (UPS) systems, and guarantees 99.999% infrastructure availability.