The U.S. Cybersecurity and Infrastructure Security Agency (CISA) has released a new guide to support the transition from legacy perimeter-based architectures to modern security frameworks.

Called “The Journey to Zero Trust,” the guide comprises a series of resources on cybersecurity capabilities and architecture topics in support of organizational adoption of modern zero trust principles.

It is designed to help federal civilian agencies advance zero trust capabilities while adopting modern architectures under the Trusted Internet Connections (TIC) 3.0 Initiative. According to CISA, the guidance is intended to improve agencies’ ability to understand, plan, and mature their zero trust strategies while enhancing visibility, control, and cybersecurity resilience.

“CISA continues to support federal agencies and the broader cybersecurity ecosystem in adopting zero trust network capabilities to meet mission needs and the evolving cyber threat landscape. With this guide, CISA helps agencies realize the benefits of zero trust architectures and the flexibilities of TIC 3.0,” Acting Executive Assistant Director for Cybersecurity Chris Butera said in a press release.

The new guidance will help agencies move beyond the limitations of TIC 2.0 and leverage Secure Access Service Edge (SASE) solutions. The agency noted that the guide could also serve as a resource for state and local governments and critical infrastructure organizations pursuing zero trust modernization.