I do understand the problem of "secrets" being embedded in a solution, either in code or data files because these get checked in to source control.
So there is the Secrets Manager Tool which works great I guess for development. But what if you go into production, say you publish your website to shared webhost. That means I would not use AZURE because it costs money.
Thus, out of the development scenario and production with Azure scenarios there is no way to use Secret Manager otherwise? What would be the best and easiest way to store and use secrets in production without Azure? I tried encryption in the past but I was looking for a more transparent implementation.