AWS and Azure Expand Managed Cross-Cloud Peering via Open Interconnect Standards

Cloud networking across competing hyperscalers has historically required substantial infrastructure overhead. AWS and Microsoft Azure introduced a joint, managed private networking capability—AWS Interconnect - multicloud with Azure Multicloud Interconnect. The service relies on an open API specification for network interoperability to link Amazon VPCs and Azure Virtual Networks directly across provider backbones, eliminating the need for third-party colocation facilities, dedicated physical circuits, and complex manual routing setups. This shift fundamentally changes the operational economics and complexity curve for multi-cloud deployments. Previously, enterprise teams attempting to build cross-cloud architectures—such as sourcing specialized models in Azure OpenAI while maintaining operational databases in AWS—spent weeks negotiating carrier contracts and managing transit gateways. By making cross-cloud interconnects a managed, software-defined primitive with built-in MACsec encryption and high-availability topologies, hyperscalers are recognizing that enterprise workloads inevitably span multiple environments. The target audience shifts from specialized telco/networking groups to platform teams and cloud architects. This integration reflects a broader, accelerating trend toward commoditizing multi-cloud networking and transport. Google Cloud and Oracle Cloud Infrastructure previously integrated into this open specification framework, and Azure's onboarding marks the consolidation of all major public clouds around standardized cross-cloud peering mechanisms. As AI workflows increasingly require distributed pipelines—where model training, feature stores, and inference engines reside across different cloud ecosystems—the industry is transitioning from isolated walled gardens toward a mesh of interconnected cloud fabrics. In practice, engineering teams must recognize that abstracting the transport layer does not eliminate core architectural responsibilities. While physical provisioning and BGP configurations are handled by the cloud providers, platform engineers remain responsible for non-overlapping CIDR IP planning, cross-cloud security group policies, egress cost management, and latency-aware distributed application designs. Practitioners should evaluate managed interconnects for cross-cloud API communications, microservice dependencies, and distributed data pipelines while establishing strict egress monitoring to prevent unmanaged multi-cloud data transfer costs.