v2

DynamicOrchestrator.cs

public class DynamicOrchestrator
{
 
    [FunctionName(nameof(DynamicOrchestrator))]
    public async Task<string> Run([OrchestrationTrigger] IDurableOrchestrationContext context,
        ExecutionContext executionContext)
    {
        var input = context.GetInput<OrchestratorInput>();
        return await context.CallSubOrchestratorAsync<string>(
            await context.CallActivityAsync<string>(
                nameof(DetermineOrchestratorToRunActivity), input.Name)
            ,input);
    }
}