Gartner Research

Best Practices for Amazon VPC and Azure VNet

Published: 16 November 2017

ID: G00337223

Analyst(s): Simon Richard


Cloud networking is different from enterprise data center networking. Technical professionals must understand these differences and adjust their practices to meet evolving business requirements. This document provides guidance for designing in-region VPCs and VNets that will scale for multicloud.

Table Of Contents

Problem Statement

The Gartner Approach

The Guidance Framework

  • Prework
    • Create a Cloud-Ready WAN Strategy
    • Understand Some Key Differences Between On-Premises and Cloud Networking
    • Create IaaS Roles and Accounts
  • Design Your VNet/VPC Layout
    • Number of Virtual Networks
    • Virtual Network IP Addressing
    • How Many Subnets Do You Need?
  • Secure Internet Access
    • Ingress Internet Access
    • Egress Internet Access
  • Establish Inter-VPC and VNet Communication
    • Virtual Network Peering Services
    • IPsec VPN Between Virtual Networks
  • Connect to the Corporate Network
    • VPN Services
    • Bypassing the Internet
    • Transit Virtual Network Pattern
  • Enable Services Connectivity and Application Delivery Controllers (ADCs)
    • Accessing AWS and Azure Public Services
    • Load Balancing in AWS and Azure

Risks and Pitfalls

  • Incurring Significant Rework When Adding New Cloud Providers
  • Not Having Clear Roles and Responsibilities
  • Not Keeping Up With the Velocity of Changes in the Cloud
  • Related Guidance

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