Transit Gateway:
A transit gateway acts as a central hub for connecting multiple VPCs and on-premises networks. It simplifies network architecture by providing a central point for routing traffic between these networks.
Analogy: Imagine a transit gateway as a central transportation hub (like a grand central station) connecting multiple office buildings (VPCs) and external transportation networks (on-premises networks).
Why It Matters: Transit gateways simplify complex network topologies, making it easier to manage and route traffic between numerous VPCs and on-premises networks, particularly useful for large-scale deployments.