Hybrid networking
CoreAzure ExpressRoute
Private connectivity between on-premises networks and Microsoft cloud services through a provider.
Key points
- ExpressRoute provides private connectivity through a provider between on-premises networks and Microsoft cloud services.
- Circuit, gateway, peering, routing, redundancy, bandwidth, and failure paths require explicit design.
Best-known use cases
- Carry steady private hybrid traffic with predictable connectivity and redundant circuits.
What candidates often confuse it with
- ExpressRoute uses provider connectivity; VPN Gateway encrypts traffic over the public internet.
Key takeaway
Choose ExpressRoute when private provider connectivity and predictable hybrid throughput are hard requirements.
Relevant exam tasks
- D4.4.S2 — Recommend a connectivity solution that connects Azure resources to on-premises networks
- D4.4.S3 — Recommend a solution to optimize network performance