Hybrid connectivity in Azure enables you to link your on-premises infrastructure with Azure resources, facilitating a seamless integration between your existing environment and the cloud.
This requires establishing secure connections, often using VPN gateways or ExpressRoute, and managing traffic flow between the two environments. Key requirements include network connectivity, security considerations, and often specific configurations for identity and access management.
Reference:
https://learn.microsoft.com/en-us/azure/networking/hybrid-connectivity/