Google Cloud has launched Cloud WAN as an organization’s wide area network (WAN). Instead of the traditional approach of laying and leasing lines, they now opt to rent Google’s existing global network. Google states that connecting sites traditionally involved a costly multiprotocol label switching (MPLS) network, prompting the shift towards Software-Defined Wide Area Network (SD-WAN) for more cost-effective management. However, as newer enterprise applications demand higher performance with lower latency and customized networks, Cloud WAN leverages Google’s global data center network (including Cross-Cloud Interconnect with other data centers like AWS, Azure, Oracle) for enhanced performance tailored to Google’s own applications.
Google designed Cloud WAN for two main usage scenarios:
1. High performance, cross-region connectivity: Connecting an organization’s WAN across regions, Google enhances links with Cross-Site Interconnect for direct layer 2 connectivity between data centers, creating faster routes to accelerate speed.
2. Migrate branch and campus networks: Connecting branches within the same region, leveraging the benefits of Premium Tier Network for efficient routing through Google’s points of presence (PoP), resulting in a high-performance WAN for organizations willing to invest in improved efficiency.
TLDR: Google Cloud introduces Cloud WAN, utilizing their global network to provide cost-effective, high-performance WAN solutions for modern enterprise applications.
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