AWS Developer Associate course · System Design Simulator

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349 hands-on lessonsYour progress is saved in this browser.

Start: IAM, roles and STS →

1 · PredictCommit to a guess first.
2 · WatchSee it break, slowed down at the key moment.
3 · FixTurn on one plain-language fix.
4 · CompareReal before and after numbers.

1 · Foundations

2 modules · 37 lessons

Module 118 lessonsIAM, roles and STSPolicies and how they're evaluated, roles, temporary credentials, cross-account access, the SDK credential chain.Module 219 lessonsEC2, load balancers and VPCInstance roles and metadata, ALB vs NLB, health checks, Auto Scaling, subnets, NAT, security groups, Route 53.

2 · Storing data

4 modules · 65 lessons

Module 319 lessonsS3 for developersPresigned URLs, CORS, multipart uploads, events, storage classes, versioning, bucket policies.Module 412 lessonsDynamoDB I: keys and capacityPartition and sort keys, hot partitions, RCU and WCU math, throttling, on-demand, Query vs Scan, pagination, batches.Module 517 lessonsDynamoDB II: indexes and streamsGSI vs LSI, conditional writes, optimistic locking, transactions, Streams, TTL, DAX.Module 617 lessonsRDS, Aurora and ElastiCacheRead replicas vs Multi-AZ, RDS Proxy, lazy loading vs write-through, TTLs, sessions.

3 · Serverless

4 modules · 70 lessons

Module 715 lessonsLambda I: running functionsSync vs async, cold starts, memory and CPU, timeouts, concurrency, reserved vs provisioned.Module 816 lessonsLambda II: events and deploysRetries, destinations and DLQs, SQS and stream sources, layers, versions and aliases, VPC.Module 918 lessonsAPI GatewayIntegrations, stages and stage variables, caching, throttling, authorizers, CORS, error codes.Module 1021 lessonsStep Functions and resilienceOrchestration vs choreography, states, Retry and Catch, Standard vs Express, backoff and idempotency.

4 · Messaging and events

2 modules · 35 lessons

Module 1118 lessonsSQS, SNS and EventBridgeVisibility timeout, long polling, dead-letter queues, FIFO, fan-out, filter policies, event rules.Module 1217 lessonsKinesis streamingShards and partition keys, hot shards, consumers, enhanced fan-out, Firehose, Kinesis vs SQS.

5 · Security for apps

3 modules · 50 lessons

Module 1317 lessonsCognito and app sign-inUser pools vs identity pools, JWTs, authorizers, guest access, fine-grained access.Module 1417 lessonsEncryption with KMSEnvelope encryption, data keys, key policies, S3 encryption modes, rotation, throttling.Module 1516 lessonsSecrets and configurationParameter Store vs Secrets Manager, rotation, encrypted environment variables, AppConfig.

6 · Deploying

3 modules · 62 lessons

Module 1617 lessonsContainers and Elastic BeanstalkECR, ECS and Fargate, task roles, Beanstalk deployment policies, blue/green.Module 1729 lessonsCloudFormation, SAM and CDKTemplates, intrinsic functions, change sets, rollbacks, SAM local testing, CDK.Module 1816 lessonsCI/CD: CodePipeline, CodeBuild, CodeDeploybuildspec, appspec hooks, canary and linear deploys, automatic rollbacks.

7 · Monitoring and the exam

2 modules · 30 lessons

Module 1919 lessonsCloudWatch, X-Ray and CloudTrailMetrics, logs, alarms, traces, annotations vs metadata, finding the root cause.Module 2011 lessonsPractice exam65 questions, 130 minutes, scored like the real exam, with a review of every answer.