Using WSL and Let's Encrypt to create Azure App Service SSL Wildcard Certificates

Using WSL and certbot, you can create a wildcard certificate for Azure websites, even though Azure requires a specific PFX format. The certificate must include a 2048-bit private key, all intermediate certificates, and the root certificate. After generating the certificate with certbot, you need to import and export it in Windows, ensuring it meets the PFX requirements. The resulting PFX file can then be uploaded to Azure App Service under Bring Your Own Cert. For custom domains, select the newly uploaded certificate as the binding. While this process can be automated, it provides a temporary solution for obtaining a wildcard certificate at a reduced cost.