As the Government of Canada (GC) transforms its IT environment, it must enable more effective collaboration and interoperability, using modern technologies and approaches. The traditional approach to establishing a security perimeter around a network has changed over the last decade. Pressures from advancing cyber threats no longer permit unconstrained network access to services. This must be reconciled alongside the demand for greater responsiveness by our users. To meet expectations, networks must become both more intuitive and inherently secure. Adopting a zero trust security approach will help the government balance the need to protect the confidentiality, integrity, and availability of its assets, while enabling users to have anywhere, anytime access, that is supported by a modern, reliable, interoperable, and sustainable IT infrastructure.