If we make any changes to appsettings.json file, the IConfiguration object will get updated on runtime.

But IOptions<MyClass> wont get updated like that so you need to use IOptionsMonitor<MyClass> or IOptionsSnapshot<MyClass>. (All three of them are from the same namespace Microsoft.Extensions.Options)

IOptionsMonitor<MyClass> is singleton, so any mutation you make to this object will persist throughout the life of the application.

IOptionsSnapshot<MyClass> is scoped, so any mutation you make to this object will be thrown out when the request finishes its life.

I learned this from Nick Chapsas in YouTube. URL
Keep coding.