How to set a custom hostname in SFCC and Page Designer?

If you have a custom hostname that you wish to use in Salesforce's Commerce Cloud Cartridge or in PageDesigner's Cartridge, and you'll need to do the following:

1. Select your site
2. Go to Merchant Tools
3. Under Site Preferences, select Custom Preferences
4. (For Page Designer, if applicable) Click on Cloudinary Page Designer
   1. Change Cloudinary CNAME (Optional) 
5. (For Commerce Cloud, if applicable) Click on Cloudinary Core Configurations
   1. Change Cloudinary Base Delivery Path

If you are looking add custom hostname on Cloudinary, please open a support ticket here.