You can manipulate some of the application gateway configurations, such as the tier, SKU size, and instance count by following the steps:
- Navigate to the created application gateway, as shown in the following screenshot:
Figure 8.6: Application gateway overview
- Under SETTINGS, click on Configuration, and a new blade will be opened, as shown in the following screenshot:
Figure 8.7: Azure Application Gateway configurations
- On the previous blade, you can change the following:
- Tier: You can upgrade it to WAF if it is Standard or downgrade to Standard if it is WAF.
- SKU size: You can change the size to the size that would fit your environment anytime you want. So, if you selected Medium and your environment keeps growing, you can change it to Large.
- Instance count: You can increase and decrease the number of instances whenever you want according to your needs.
- Once you have changed the configurations to fit your needs, do not forget to click on Save to let the application gateway work with the new changes.