Concurrency vs Parallelism: What's the Real Difference and When to Use Each? Alternatively, if you want a sl

Yo, concurrency vs parallelism is confusing af until you see it in action.

Concurrency: You’re texting while watching TV—switching attention.
Parallelism: You and your friend texting separately at the same time.

Web servers? Often both! Node.js is concurrent (single-threaded event loop), but Apache can do parallelism (multiple processes).

If you’re coding, concurrency is about structure (async/await), parallelism is about speed (threads/cores). Tools? Try `Ray` for Python parallelism.