Learn Durable Functions with .NET Core and C#, stateful Serverless

Thanks for posting this, it's the best explanation of durable functions I've read so far.

Can I call multiple activities in parallel? e.g. instead of this:

outputs.Add(await context.CallActivityAsync<string>("Orchestration_Hello", "Tokyo"));
outputs.Add(await context.CallActivityAsync<string>("Orchestration_Hello", "Seattle"));
outputs.Add(await context.CallActivityAsync<string>("Orchestration_Hello", "London"));

Do this:

var tasks = new List<Task>
{
    context.CallActivityAsync<string>("Orchestration_Hello", "Tokyo"),
    context.CallActivityAsync<string>("Orchestration_Hello", "Seattle"),
    context.CallActivityAsync<string>("Orchestration_Hello", "London"),
};
var outputs = await Task.WhenAll(tasks);

?