Expanding enterprise unified communications (UC) capabilities improves the ability to win, retain, and serve customers so it's important to tackle the barriers to adoption. Users may use alternative technologies readily available from the cloud like Skype, or simply go without because of either lack of training or complexity of the systems deployed. As application development and delivery (AD&D) professionals supporting unified communications try to boost user adoption, they struggle with integrating it with existing voice systems in order to reduce the complexity of both the user and management experience. What approaches make sense for integrating voice and UC software?