From: Cloud.CIO.gov
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Trusted Internet Connections
In 2007, M-08-05 Implementation of Trusted Internet Connections (TIC)3 was released, with the purpose of standardizing the security of external network connections used by Federal agencies while reducing the number of those external network connections. The Trusted Internet Connections policy was established when agencies maintained the majority of their systems within their agency-owned and operated networks, and when networking was constrained by physical limitations. Since then, the technology landscape has changed dramatically with the proliferation of private-sector cloud offerings, the emergence of software-defined networks, and an increase in the mobile workforce. Improvements to security are now driven by standards and secured connections instead of limited physical connections.