Certified: The CompTIA CloudNetX Audio Course

Transit gateways appear in CloudNetX scenarios as a way to scale connectivity in cloud and hybrid designs without creating an unmanageable web of peerings and custom routes. This episode defines a transit gateway as a centralized routing hub that connects multiple networks through standardized attachments, enabling hub-and-spoke designs with controlled route sharing. The first paragraph focuses on the architectural problem it solves: as the number of networks grows, direct peering relationships become complex, brittle, and difficult to govern, while a transit hub provides consistent control over propagation and segmentation. It also explains how route tables and attachment policies can separate environments, tenants, or functions, enabling shared services where appropriate while preventing unintended lateral reachability. The episode frames transit gateways as a governance tool as much as a routing tool, because they centralize decisions about which networks should communicate and under what conditions.