Computer, server and communication equipment is a noticeable expenditure item in the budget of every company. Moreover, even the latest equipment literally in some years ceases to conform to requirements of high-technology applications therefore it needs upgrade and new costs. For companies, who aren't ready to spend a huge amount of money for purchase and updating, it's reasonable to use a temporary resources (lease). In that case the client pays only a modest subscriber fee and gets exempted from large payments. That provides the maximum economic feasibility cause only really used capacities are paid for.