Microsoft has announced new version of Azure Application Gateway and its Web Application Firewall module (WAF). In this article, we will discuss about the enhancements and new highlights that are available in the new SKUs i.e. Standard_v2 and WAF_v2.
Enhancements and new features:
Scalability: It allows you to perform scaling of the number of instances on the traffic.
Static VIP: The VIP assigned to the Application Gateway can be static which will not change over its lifecycle.
Header Rewrite: It allows you to add, remove or update HTTP request and response headers on application gateway.
Zone redundancy: It enables application gateway to survive zonal failures which allows increasing the resilience of applications.
Improved Performance: Improvement in performance during the provisioning and during the configuration update activities.
Cost: V2 SKU may work out to be overall cheaper for you relative to V1 SKU. For more information, refer Microsoft pricing page on V2 SKU costs.
The below table shows the comparison between Application gateway V1 and Application Gateway V2:
|
Features
|
v1 SKU
|
v2 SKU
|
|
Autoscaling
|
✓
|
|
|
Zone redundancy
|
✓
|
|
|
Static VIP
|
✓
|
|
|
Azure Kubernetes Service (AKS) Ingress controller
|
✓
|
|
|
Azure Key Vault integration
|
✓
|
|
|
Rewrite HTTP(S) headers
|
✓
|
|
|
URL-based routing
|
✓
|
✓
|
|
Multiple-site hosting
|
✓
|
✓
|
|
Traffic redirection
|
✓
|
✓
|
|
Web Application Firewall (WAF)
|
✓
|
✓
|
|
WAF custom rules
|
✓
|
|
|
Transport Layer Security (TLS)/Secure Sockets Layer (SSL) termination
|
✓
|
✓
|
|
End-to-end TLS encryption
|
✓
|
✓
|
|
Session affinity
|
✓
|
✓
|
|
Custom error pages
|
✓
|
✓
|
|
WebSocket support
|
✓
|
✓
|
|
HTTP/2 support
|
✓
|
✓
|
|
Connection draining
|
✓
|
✓
|
Microsoft will disable the creation of new Application gateway on V1 SKU soon. So, you may refer this article: https://docs.microsoft.com/en-us/azure/application-gateway/migrate-v1-v2to migrate your existing Application gateway V1 to V2.
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