This IDC Perspective shows why it is important for CIOs to work well with the C-suite, explores considerations and obstacles to C-suite relationships, and offers a framework for enlisting the C-suite for succeeding with organizational change at scale. Digital transformation has created enormous challenges for global IT organizations, which must transform themselves to meet complex competitive challenges. C-suite executives can and should play a visible role in IT transformation to maximize the potential for success. This document is one of a series of actionable guides for CIOs leading IT transformation among three types of key stakeholders: C-suite, line-of-business executives, and direct reports. For a more complete discussion, see The CIO's IT Organizational Transformation Management Guide: Leading Your Direct Reports (IDC #US44243518, September 2018) and The CIO's IT Organizational Transformation Management Guide: Winning and Keeping LOB Executives' Support (IDC #US44243418, September 2018)."Even if IT is running well, it may not be delivering the digital strategy results that the leadership team expects and needs," says Marc Strohlein, adjunct analyst with IDC's IT Executive Programs (IEP). "CIOs need to work closely with the CEO, the C-suite, and their teams to effect game-changing IT organizational transformation."