Defense Connect Online

Overview
The Defense Connect Online (DCO) service is the designated enterprise tool for world-wide synchronous and asynchronous collaboration for both the Unclassified but Sensitive Internet Protocol Router Network (NIPRNet) and Secret Internet Protocol Routing Network (SIPRNet). DCO is available to all DoD partners, allowing users to communicate and share information in a secure forum through the use of instant messaging, low-bandwidth text chat, and audio/video web conferencing.