AWS SQS vs SNS Explained Queues vs PubSub

Most people mix up SQS and SNS because both move messages. In this video, you'll learn the one mental model that makes the difference stick, then use both services in the AWS Console and CLI so you can answer any Cloud Practitioner scenario confidently. 0:00 Mixing up SQS and SNS is a costly mistake 0:46 A payment goes through while the payment service is down 1:53 By the end of this video 2:30 The problem: synchronous calls break when one piece fails 3:46 How a queue decouples producers from consumers 4:14 Reading the queue is the consumer's job 5:47 SQS retention and the visibility timeout 7:08 Checkpoint: queue basics 7:19 Standard vs FIFO queues 8:40 The duplicate-message trap beginners miss 9:40 Dead-letter queues: the parking lot for bad messages 10:45 SQS use cases that show up on the exam 11:24 Checkpoint: SQS details 12:07 One outage, six teams notified in seconds 12:47 SNS fan-out diagram: one publisher, many subscribers 13:56 Push delivery and the two SNS jobs 14:47 Six endpoints SNS can push to 15:27 SNS topic types: patterns over memorized rules 16:28 Checkpoint: SNS basics 17:08 Retention: SQS stores, SNS delivers 18:01 SQS vs SNS head-to-head 19:20 The fanout + queue architecture that handles spikes 20:09 Why SNS alone won't save you when consumers are slow 21:19 AWS messaging services side by side 22:50 Checkpoint: fanout plus queue 23:21 AWS Console: create an SQS queue and poll a message 24:13 AWS Console: publish an SNS message to an email subscriber 24:56 CLI: create an SNS topic, subscribe, and publish 26:19 How certification exams test SQS and SNS 27:39 Checkpoint: hands-on recall 28:13 High-yield SQS and SNS cheat sheet 29:21 Scenario pattern: one event, three teams, three queues 29:59 Whole video recap: the 3 takeaways 31:18 Next up: Part 2 — Amazon EventBridge 32:35 Your move this week 33:41 Checkpoint: the two-sentence interview answer 34:57 Go Build Something 📚 Full series: AWS Certified Cloud Practitioner (CLF-C02) Certification Guide ▶ Part 1: AWS SQS vs SNS: Queues vs Pub/Sub for Beginners Part 2: AWS EventBridge Explained: Build Event-Driven Apps Without the Coupling Part 3: AWS Step Functions Explained: Build Reliable Serverless Workflows Part 4: Amazon API Gateway Explained: Build and Deploy APIs Fast Part 5: Pick the Right AWS Analytics Service: Athena, Glue, Kinesis, EMR & QuickSight Part 6: Which AWS AI/ML Service Do You Pick? (CLF-C02 Exam Guide) 🔔 Subscribe and hit the bell so you never miss a new video. 📥 Download the free IT Career Roadmap at the link below. https://bit.ly/4yjWjcY 💬 Don't see the IT topic you're looking for? Drop it in the comments — we'll research it and make a video on it.