This is a continuation of articles on IaC shortcomings and resolutions. Specifically, we discuss the differences between managed virtual network and bring your own virtual network for shared resources like an azure data factory or an analytics workspace.

In Azure Data Factory, there are two options for creating a virtual network: Managed Virtual Network and Bring Your Own Virtual Network (BYOVN). Let's discuss the differences between these two options:

1. Managed Virtual Network (MVNet):
• This is the default option provided by Azure Data Factory.
• When you create a Data Factory, Azure automatically creates a new virtual network and subnet for it.
• MVNet allows you to manage and secure the network resources within your Data Factory, such as private endpoints, firewall rules, and network security groups.
• You have control over the subnet address range and can configure network settings, like DNS servers and custom routes.
• It simplifies the setup process, as Azure handles the network infrastructure for you.
2. Bring Your Own Virtual Network (BYOVN):
• This option allows you to use an existing virtual network in your Azure subscription.
• With BYOVN, you can connect your Data Factory to your existing network infrastructure, making it easier to integrate with other resources and services within your network.
• It provides more control and flexibility over your network configuration and allows you to leverage your existing network security measures.
• BYOVN enables you to use features like service endpoints, network security groups, and custom routes that are already configured in your virtual network.
• However, you need to ensure that your virtual network meets the necessary requirements and is compatible with Azure Data Factory.

Key differences between Managed Virtual Network and Bring Your Own Virtual Network include:

1. Ownership and Management: With MVNet, Azure manages the virtual network and subnet for you, while with BYOVN, you own and manage the virtual network.
2. Setup Complexity: BYOVN requires you to have an existing virtual network, which may involve more initial setup and configuration, whereas MVNet simplifies the setup process by automatically creating the necessary network resources.
3. Integration and Flexibility: BYOVN allows for better integration with existing network resources and provides more control over network configuration, while MVNet offers a standardized and managed network environment.
4. Network Security: Both options offer network security features like network security groups, private endpoints, and firewall rules. However, BYOVN allows you to leverage your existing network security measures, while MVNet provides a dedicated network environment managed by Azure.

We must consider our specific requirements, existing network infrastructure, and the level of control and integration we need when choosing between Managed Virtual Network and Bring Your Own Virtual Network for Azure Data Factory but going with the default managed virtual network will benefit in most cases.