Since under common services arrangements user organizations have little, if any, control over the costs of the services of any given provider, it is essential that they feel confident that the services are being provided cost effectively.
由於在共同事务的情况下，用户组织对目前提供者的任何事务费用几乎无从控制，务必使他们相信所承办的事务符合成本效益。