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CDO(1) (Chief Digital Officer) The executive responsible for the customer-facing aspects of IT in an organization. Responsibilities include user interfaces, mobile applications and social media integration. If both chief digital officers (CDOs) and chief technical officers (CTOs) exist within a company, the CDO deals with the front end of the business (what the user sees) and the CTO handles back-end processing and infrastructure. See CTO and CIO.
(2) (Collaborative Data Objects) A programming interface from Microsoft for accessing MAPI-based email, calendaring and scheduling servers. Originally called "OLE Messaging" and "Active Messaging," CDO wraps the Extended MAPI library into a COM object. Starting with Outlook 2007 and Exchange Server 2007, CDO was no longer part of the install package and had to be downloaded separately. See COM.
CDONTS (CDO for NT Server) is the SMTP version of CDO. It is used to send text email and HTML-based email from ASP pages.