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If the bank decides to invest means in new information technologists just to implement a fashionable beautiful system, then risk big. If the decision is made proceeding from the current tasks, i.e. with what the operating system not quite copes, then need of replacement is obvious. And in this case to put a question of what system, decides much more simply. Any developer does not want to support many systems. It is economically unprofitable. And sooner or later we will come to total customer move to the most perspective platform. It is a question of two, three or four years. But it is all the same will occur. The fact that SOA as architecture, is strategically right, the issue which is also resolved. Of course, millions of flies can be mistaken, but discussions in the world concerning correctness or abnormality of this technology already ceased.