Spam firewall concepts
What makes server colocation the best kind of service possible is the fact that user actually owns his own server, rather than leasing it out, so he gets to have exactly the kind that he requires for his use. The server is then kept in data centres where hundreds of other such machines are also placed, hence the term 'server colocation'. The infrastructure of such data centres for server colocation is specifically geared towards keeping a large number of such machines online all the time. Therefore, in the server colocation service, all the user pays for to the service providers is the rent for the physical space he is using for his machines, and for sharing the data centres communication facilities and networking. Server colocation is the most flexible available with respect to the user's needs.