Implementing authentication using certificates

By default, Azure secures the *.azurewebsites.net wildcard domain with a single SSL certificate. So, when you use the default domain that is generated for your app when you deploy it to Azure App Service, your users will access the app over a secure connection.

When you use a custom domain for your app – for instance, az-303.com – you should assign an SSL certificate to it yourself.

You can assign SSL certificates to your app from the Azure portal. To assign a certificate, your app must run in the Standard, Premium, or Isolated App Service plan tiers.

Tip

You can order your SSL certificate from the App Service Certificate Create page directly as well. To order a certificate, please refer to https://portal.azure.com/#create/Microsoft.SSL.

You can also create a free certificate and use it at https://www.sslforfree.com and convert the certificate into an SSL certificate by going to https://decoder.link/converter...