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The Architect's Guide to True Hybrid Cloud

Download the definitive guide to building a unified, scalable hybrid cloud overlay using Arista CloudEOS. This guide includes reference architectures, automation frameworks, and deployment best practices to simplify cloud extension while preserving control, visibility, and performance.

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Proven Architectures For:

Stop Bolting Clouds Onto Your Data Center. Build a Unified Fabric Instead.

Hybrid cloud promises agility, but most implementations fall short. Siloed toolsets, inconsistent security controls, and fragmented visibility across on-prem and cloud create operational drag. DCI links become opaque choke points, and workload portability remains a slideware myth.

This guide presents a modern, overlay-based approach using Arista CloudEOS to create a single, secure, and automated network fabric across cloud and data center infrastructure.

What You'll Learn in This Whitepaper

Download this guide to learn how to:

Achieve Operational Consistency: Extend a single network operating system (Arista EOS) across your on-premise data center and multiple Azure regions, eliminating disparate tools and skill set gaps.

Enable Seamless Workload Mobility: Build a unified EVPN-VXLAN overlay that allows you to move applications and workloads between on-prem and any cloud/any region without changing IP addresses or re-architecting security.

Automate the Full Lifecycle: Implement a complete Infrastructure-as-Code (IaC) workflow using Arista Validated Designs (AVD), Ansible, and Terraform to provision, manage, and monitor your entire hybrid network as a programmable system.

Gain End-to-End Visibility: Leverage Arista CloudVision to create a single source of truth for the entire fabric, using real-time telemetry to slash troubleshooting times and proactively manage performance from core to cloud.

Integrate Any Environment:

Azure Multi-Region Hybrid Cloud: Extend your on-prem Arista or non-Arista environment into multiple Azure regions using CloudEOS and CloudVision for unified segmentation and telemetry.Azure Multi-Region Hybrid Cloud with Unified EVPN Fabric Overlay
AWS Multi-Region Hybrid Cloud: Standardize network operations across AWS regions and your data center with BGP EVPN overlays and CloudEOS-based edge routing.

AWS multi-region Hybrid Cloud with Unified EVPN Overlay

True Multi-Cloud, Multi-Region Hybrid Cloud: Combine Azure, AWS, GCP and on-prem infrastructure into a single cohesive network fabric using CloudEOS VMs and transit overlays, enabling policy consistency, observability, and scalable automation across any platform.

Multi-cloud Multi-Region Hybrid Cloud with Unified EVPN Overlay

Each reference architecture is mapped to operational use cases like segmented app tiers, cloud migrations, compliance zoning, and resilient, distributed design patterns.

This Guide is Essential For:

  • Cloud Network Architects
  • Senior Network Engineers & Infrastructure Managers
  • IT Directors planning hybrid cloud migrations
  • Solutions Architects designing multi-region or multi-cloud deployments

"We wrote this guide to be the blueprint we wish we had five years ago. It cuts through the complexity of hybrid cloud networking and provides clear, actionable architectures for building a single, automated fabric between your on-premise data center and a your public cloud footprint."

Frequently Asked Questions

What exactly is Arista CloudEOS?

Arista CloudEOS is the virtualized software form of Arista’s robust Extensible Operating System (EOS). It delivers the same powerful routing, security, and telemetry features found in Arista's physical network hardware but is designed to run in virtual machines (VMs), containers, and across public cloud platforms like AWS, Azure, and GCP. This allows for consistent network operations and architecture across on-premises and cloud environments.

How does CloudEOS help with managing multiple public clouds (multi-cloud)?

CloudEOS simplifies multi-cloud networking by providing a consistent routing platform and operational model across different cloud providers. Features like Multi-Cloud Routing, Universal Cloud Network (UCN) principles, and Cloud Network Private Segments (CNPS) allow you to build scalable transit architectures, extend network segments securely, and apply uniform policies, reducing the complexity typically associated with managing disparate cloud network environments.

Can CloudEOS work with my existing cloud provider's networking services?

Yes. Arista CloudEOS is designed for flexibility. It can be deployed alongside native cloud networking services (like AWS Transit Gateway or Azure Virtual WAN) to enhance them with consistent management or advanced features. Alternatively, it can serve as a primary routing and network services platform within the cloud, depending on your specific needs for control, visibility, and feature consistency with your on-premises Arista network.

How does CloudEOS support Infrastructure-as-Code (IaC) and automation?

CloudEOS fully supports IaC practices, which is critical for NetDevOps teams. It integrates seamlessly with popular automation and orchestration toolchains like Terraform and Ansible. This allows for the automated deployment, configuration, and lifecycle management of network services in the cloud, ensuring speed, consistency, and reduced manual effort.

What are "Cloud Network Private Segments (CNPS)" in CloudEOS?

Cloud Network Private Segments (CNPS) is an Arista feature within CloudEOS that uses technologies like VXLAN and IPsec to create secure, global Virtual Private Networks (VPNs). These segments can extend across different cloud regions and even multiple cloud providers, allowing you to maintain a consistent network segmentation model and extend your on-premises network trust zones directly into your cloud environments.