If you are interested in learning more about the topics that have been covered, you can check the following links:
- Planning and design for VPN gateway: https://docs.microsoft.com/en-us/azure/vpn-gateway/vpn-gateway-plan-design
- Overview of BGP with Azure VPN gateways: https://docs.microsoft.com/en-us/azure/vpn-gateway/vpn-gateway-bgp-overview
- Highly available cross-premises and VNet2VNet connectivity: https://docs.microsoft.com/en-us/azure/vpn-gateway/vpn-gateway-highlyavailable
- About Point-to-Site VPN: https://docs.microsoft.com/en-us/azure/vpn-gateway/point-to-site-about
- Configure Point-to-Site connections—RADIUS authentication: https://docs.microsoft.com/en-us/azure/vpn-gateway/point-to-site-how-to-radius-ps
- Connect virtual networks from different deployment models: https://docs.microsoft.com/en-us/azure/vpn-gateway/vpn-gateway-connect-different-deployment-models-portal
- ExpressRoute prerequisites and checklist: https://docs.microsoft.com/en-us/azure/expressroute/expressroute-prerequisites
- ExpressRoute workflows for circuit provisioning and circuit states: https://docs.microsoft.com/en-us/azure/expressroute/expressroute-workflows
- ExpressRoute routing requirements: https://docs.microsoft.com/en-us/azure/expressroute/expressroute-routing