Google Cloud officially launched Cloud WAN, a fully managed, software-defined wide area network designed to meet the connectivity, security, and scalability needs of modern enterprises operating in a multicloud, AI-first world. Built on Google’s global backbone — with 2 million+ miles of fiber, 202 PoPs, and 33 subsea cables — Cloud WAN provides a unified architecture to simplify enterprise networking, reduce costs, and deliver high performance across geographically distributed environments.
In a blog posting, Google’s Muninder Sambi, VP Cloud Networking, and Rob Enns, VP & GM Cloud Networking, state that by abstracting away legacy complexity and offering a globally distributed, programmable platform, Cloud WAN sets a new standard for enterprise networking in the AI era. It empowers businesses to confidently scale AI applications, modernize infrastructure, and unify their multicloud strategies — all while reducing cost and risk.
As AI workloads scale across clouds, data centers, and edge locations, networking complexity has exploded. Enterprises are forced to juggle patchwork SD-WANs, inconsistent security stacks, and costly MPLS or colocation-based architectures. Cloud WAN changes that paradigm — offering up to 40% lower TCO and 40% better performance than public internet-based WANs, while enabling seamless, policy-driven connectivity across regions, clouds, and service domains.
What Cloud WAN Means for Enterprises in a Multicloud World
Modern enterprises increasingly adopt multicloud strategies, distributing workloads across Google Cloud, AWS, Azure, and OCI for resilience, data sovereignty, and best-of-breed capabilities. But stitching those environments together securely and efficiently has been a persistent challenge. Cloud WAN now provides unified network fabricthat enables:
• Cross-cloud connectivity via Cross-Cloud Interconnect, available in 21 locations globally.
• Policy consistency and observability across providers with Network Connectivity Center.
• End-to-end segmentation and security with integrated NGFWs, SSEs, and Cloud Armor.
• Dynamic traffic steering and global optimization through Google’s SDN-powered core.
This means enterprises no longer need to manually manage transit VPCs, BGP peering, or route propagation logic. With Cloud WAN, businesses gain a programmable, intent-based platform to connect branch offices, SaaS apps, cloud workloads, and edge environments with reliability and simplicity — all from a single control plane.
A Major Shift for Telcos and Service Providers
Telcos and service providers — traditionally the backbone of enterprise WAN connectivity — now face a pivotal opportunity (and challenge). Cloud WAN represents a strategic shift from private MPLS links and colocation-based interconnects to cloud-native WAN-as-a-Service models. This shift:
• Reduces reliance on physical infrastructure and middle-mile complexity.
• Offers new service monetization opportunities by layering SD-WAN, SSE, and managed services atop Cloud WAN.
• Incentivizes telcos to modernize their own core and edge networks, integrate directly with hyperscalers like Google, and act as service orchestration partners rather than pure transport providers.
Google’s partnership with BT, which now connects its Global Fabric NaaS offering to Cloud WAN, reflects this new model. Similarly, Lumen will deliver last-mile fiber access into Cloud WAN starting in 2025 — giving telcos a role in the edge-to-cloud value chain.
Disrupting and Elevating the SD-WAN Market
The SD-WAN market has matured rapidly over the last decade, with enterprises adopting it to bypass MPLS, enable cloud access, and improve agility. But as AI and multicloud workloads become dominant, traditional SD-WAN overlays are reaching their limits — constrained by:
• Complex routing policies and manual provisioning.
• Security sprawl from siloed middleboxes.
• Limited performance on public internet paths.
Cloud WAN redefines the SD-WAN architecture by serving as a cloud-native underlay with built-in security, observability, and programmability. Enterprises can:
• Integrate existing SD-WAN overlays from partners like Cisco, Fortinet, Juniper, and Velocloud.
• Simplify policy enforcement and routing using Google’s SDN core and Network Connectivity Center.
• Use Private Service Connect to expose services securely across multiple compute backends.
• Extend enterprise fabric with GDC (Google Distributed Cloud) for low-latency edge workloads.
In effect, SD-WAN vendors can now evolve into orchestration layers on top of Cloud WAN, focusing on application-centric policies, AI-driven optimizations, and automation — while offloading transport, interconnect, and global routing complexity to Google’s backbone.
Key Highlights from Google Cloud WAN:
• Enterprise-grade backbone: Built on Google’s 99.99% reliable network with thousands of global peerings.
• Massive performance and cost gains:
• Google calculates up to 40% performance improvement vs. internet-based connections.
• Google estimates up to 40% TCO savings vs. customer-managed WANs.
• Multicloud and hybrid connectivity:
• Cross-Site Interconnect (L2) and Cross-Cloud Interconnect (multicloud).
• Site-to-site data transfer via Network Connectivity Center, now available in 20 countries.
• Branch and campus modernization:
• Premium Tier routing, SD-WAN support, and partner-managed access.
• Verified Peering Provider and dedicated fiber options for last-mile integration.
• Integrated security and observability:
• Cloud NGFW, Cloud Armor, inline network DLP, and DNS Armor.
• Ecosystem support from Palo Alto Networks, Symantec, Menlo Security, Broadcom, and more.
• AI-ready networking:
• 3.2 Tbps RDMA bandwidth, 400G Interconnect, and 30,000 GPU cluster support.
Watch the full announcement and demos from Google Cloud Next.
