Sizing Model For Virto Commerce Solutions


Virto Commerce is a scalable e-commerce solution and designed to build large and complex digital commerce solutions for B2B, B2C or B2B2C business, marketplaces and derived SaaS commerce platforms.

This topic shows the scalability of Virto Commerce Solutions from Smal to Extra Large and helps you choose the right Azure services and price plans.



This section describes how to scale solution based on Virto Commerce platform and Virto Commerce Storefront Kit.

S: Small

The small environment is good for simple projects, proof of concept, etc.

Key elements:

  1. 1x Storefront Instance
  2. 1x Backend Instance

M: Medium

Ready for production and scalability. You can go live with MVP.

Key elements:

  1. Multiple Storefront Instances
  2. Multiple Backend Instances
  3. Redis Cache as Distributed Cache Storage

L: Large

Good for the complex solution and provides ability use benefits of modern Azure service and Virto Commerce.

Key elements:

  1. SQL Database Elastic Pool (Split modules by different DB: Cart, Order, Catalog, Customers, etc.)
  2. AzureSearch or Elasticsearch cluster

XL: Extra Large

You can decrease resource utilization and cost by splitting admin by functional elements. Minimize performance degradations from different processes (Ex: Background Jobs to Storefront and Content Managers).

Note: The environment is very close to multiple regions solutions and helps to achieve high availability and high performance.

  1. VC backend environment for Storefront App (no Background Jobs)
  2. VC backend environment for Content Managers (no Background Jobs)
  3. VC backend environment for Background Jobs (focus on high CPU utilization)

Sizing and Cost calculator

This section helps you to calculate the cost are required resources.

Sizing Model

This data based on best practices and feedback from multiple custom e-commerce solutions. The actual result can depend on custom implementation, data and configuration.

Size Frontend Requests/sec Cart Changes peak/sec Orders per day
S 10 1 200
M 100 5 1500
L 300 50 15000
Size Azure Web Site Price Plane Frontend Azure Web Site Instance Count Backend Azure Web Site Instance Count Azure SQL Price Plane Azure SQL Count Azure Virtual Machine (Elastic Search) ES Cluster
S S2 1 1 S2 50 DTU A2 No
M S2 2 2 S3 100 DTU A3 Yes
L S3 3 5 P1 Several DB /Elastic Pool A4 Yes
XL ? ? ? P2 Several DB /Elastic Pool A4 Yes


Actual benchmark:

Azure Price Calculator

You configure and estimate the costs for Azure products in Azure Price Calculator.

How to improve security

There are several general approaches to improve the security of the application:

  • Add Azure Application Gateway
  • Add Azure Web Application Firewall before App Web Services.
  • Use HTTPS connections
  • Limit direct access to services.

How to improve performance

There are several general approaches to achieving high availability and improve performance:

  • Increase count of instances with a load balancer (included in Azure)
  • Use several databases: one for static content (catalog, etc.), second for dynamic content (customers, shopping carts, orders)
  • Use Azure SQL Database Elastic pool
  • For XL applications, recommend using Azure Premium plans, isolated environment and look towards Azure Cosmos DB

How to monitor