Azure computer

Chose the right hosting plan

• Consumption plan
  • Doesn’t support VNET integration
  • Is the predecessor of Flex Consumption plan
• Flex Consumption plan
  • Supports VNET integration
  • Dont support Slot deployment
  • Only run one function app
• Premium plan
  • Supports VNET integration
  • Supports Slot deployment
  • Runs up to 100 different function apps
• Dedicated (App Service) plan

Source

Here is a great overview of the different plans: Overview

Deployments

Depending on the type of your function app, it can be deployed in different ways. Source