Explore the intricacies of concurrent futures execution in Rust through this 37-minute conference talk by Yoshua Wuyts at Rust Linz, September 2021. Delve into the basic model of concurrent execution of futures and navigate the design space of this feature, examining various implementation approaches. Discover a novel futures concurrency library that offers an ergonomic solution for concurrent futures execution in Rust. Learn about concurrency modes, API design considerations, join macros, future concurrency, merge streams, select macros, and async stream merging. Witness a practical demonstration of stream merging to solidify your understanding of these concepts.