Concurrency

Lesson in the iOS Roadmap · Stage 19: Async / Await

Last updated 14 September 2026

What is Concurrency?

Swift's structured concurrency builds on async/await with additional primitives for parallel execution. async let runs multiple async operations concurrently, TaskGroup manages a dynamic set of concurrent child tasks, and actors protect shared mutable state from data races. The Swift concurrency model enforces safety through the Sendable protocol and actor isolation.

Study this in the interactive course See the whole iOS roadmap

Free resources to learn Concurrency

Official docsSwift Documentation (How to interact)
Official docsApple Documentation (Signatures for interaction)
ArticleConcurrency bu Example

Concurrency: common questions

Can I learn Concurrency in Hindi?

This lesson is written in English. Once you sign in, open it in the interactive course and ask the AI tutor to explain Concurrency in Hindi or Hinglish. The tutor answers from this lesson’s own text, so it stays on the syllabus, and it runs on your own Google, OpenAI or Anthropic key.

Is this Concurrency tutorial for beginners?

It is lesson 114 of 170 in the free iOS roadmap, in stage 19, Async / Await. If you are new to iOS, start from stage 1 and come back here in order; if you already know the earlier stages, this lesson stands on its own.