async / await / task

Thank you very much, it works well.
Why you used. 

await Task.Run(() => operations.Example1Async(personArgs1, progress));

Here you use.

Task<Person> taskOne = await Task.Factory.StartNew(async () =>
{
   var person = new Person() { Id = -1 };

Can you say something about the concept, background.

Thanks in advance.

With best regards Markus