There are many approaches to concurrency all with different ways of handling cancellation and errors. Structured Concurrency is an approach that makes typical fan-out and fan-in use cases like races, easier to manage especially when sub-tasks need to be canceled or can produce errors. This talk will compare different approaches across a variety of languages and frameworks. The audience will pick from a long possible list of approaches, including: Scala (with ZIO, Ox, Kyo), Java with Loom, Kotlin (Arrow, Coroutines, Splitties), Python (various), Rust (Tokio or Futures).