Hello, I copy paste the main idea from an article I have written: contextual async <https://pythonc.home.blog/2018/12/14/premier-article-de-blog/> " Imagine you have some code written for monothread. And you want to include your code in a multithread environment. Do you need to adapt all your code which is what you do when you want to migrate to async code ? The answer is no. Functionnally these constraints are not justified neither technically Do we have the tools to do this ? Yes because thanks to boost::context we can switch context between tasks. When a task suspends, it just calls a function (the event loop or reactor) to potentially switch to another task. Just like threads switch contexts… Async/Await logic has introduced a symetric relation wich introduces unnecessary contraints. We should just the same logic as thread logic. " Read the examples in the article I have developped a prototype in C++ and everything works perfectly. My opinion is that sooner or later, it will have to switch to this logic because chaining async/aswait is a huge contraints and does not make sense in my opinion. Maybe I am missing something, Feel free to give me your feedback. Regards, Chris