Yes, you can host and deploy the blazor server-side application without using Azure but by using AWS or Firebase. Here you can find the steps for hosting the blazor application using AWS.
- Create the Blazor application
- Publish the application using the context menu from the Solution in Solution Explorer in Visual Studio.
- Click Publish. If there is no error, your application will be published successfully.
Host the application to AWS: https://topswagcode.com/2019/03/05/Hosting-Blazor-Apps/#AWS
Host the application to Firebase: https://dzone.com/articles/hosting-a-blazor-application-on-firebase