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Lessons (40)

• S3: Store Files Safely

  Use S3 for uploads, images, backups, and static files without making buckets public by accident. What S3 is …

• Practical Lab: S3 File Upload and CloudFront Delivery with NestJS

  Build a private S3 bucket, put CloudFront in front of it with Origin Access Control, create a least …

• Providers and Your First AWS Resources

  Configure AWS safely and provision a private, versioned S3 bucket with explicit resource settings. Before running this lab …

• IAM: Who Can Do What

  … For example, arn:aws:s3:::academy-shop-uploads/receipts/123.pdf identifies one S3 object. Two policies answer …

• Imports, Moved Blocks, and Safe Refactoring

  … Generated configuration is a starting point. Rename without replacement If aws s3 bucket.assets becomes aws s3 bucket …

• CloudFront: Faster Websites and Safer File Delivery

  Put CloudFront in front of a static site or S3 files so visitors use nearby cached copies while …

• State, Remote Backends, and Locking

  Share state through S3, enable native locking, migrate safely, and protect recovery data. Why state exists A resource …

• VPC Endpoints, Transit Gateway and Hybrid Networking

  … ECR image pulls can also require ECR API and registry connectivity; an S3 endpoint alone does not establish …

• AWS Data Pipelines in Plain Language

  Move raw data into S3, clean it, catalogue it, and query it without learning every analytics service at …

• Serverless Architecture

  … S3Event) = { for (const record of event.Records) { const image = await s3.getObject(record.s3.bucket.name, record.s3 …

• Multi-Account Strategy, Governance and Security Operations

  … Use an organization trail to a locked S3 bucket with log file validation AWS Config Resource configuration history …

• AWS Interview Questions: Clear Answers

  … The task security group allows only the ALB's app-port traffic. Why is listing an S3 bucket …

• IAM Deep Dive: Policy Evaluation, STS and Cross-Account Access

  … Temporary credentials with session expiry App- S3: GetObject using temporary keys A role has two policies: - Trust policy …

• Terraform: Start Here

  … Term Meaning Example --- --- --- Resource Something Terraform manages An S3 bucket Data source A read of existing information An …

• AWS: Start Here

  … ECS, EC2, or Lambda] A -- D[RDS or DynamoDB] A -- S[S3 files] Need AWS service to learn …

• Production Capstone and Interview Practice

  … bucket id" { value = aws s3 bucket.assets.id } output "bucket arn" { value = aws s3 bucket.assets.arn } Document …

• Run Containers on AWS with ECR and ECS

  … It does not grant the eventual application S3 or database permissions. Build for the architecture configured in the …

• Cost Optimization and the Well-Architected Framework

  … add S3 and DynamoDB gateway endpoints; use interface endpoints for heavy services; keep traffic within an AZ. 3 …

• VPC Networking Without the Confusion

  … An S3 gateway endpoint can instead provide access to S3 through VPC routing without requiring a NAT path …

• Resilience, Disaster Recovery and Multi-Region Design

  … the hard part: Data store Cross-region feature --- --- S3 Cross-Region Replication (needs versioning; replicates new objects) DynamoDB …

• Safe AWS Deployments with IaC and CI/CD

  … AWS::S3::Bucket Properties: PublicAccessBlockConfiguration: BlockPublicAcls: true BlockPublicPolicy: true IgnorePublicAcls: true RestrictPublicBuckets: true VersioningConfiguration: Status: Enabled BucketEncryption: ServerSideEncryptionConfiguration …

• EC2, Storage and Auto Scaling

  … Keep user uploads in S3 and shared session data in an appropriate external store. Otherwise a user's …

• Scaling, Load Balancing & Rate Limiting

  … Keep sessions in Redis or in tokens, files in object storage (S3), and state in the database. Scaling …

• Linked Lists

  … next only"] s1[A] -- s2[B] -- s3[C] -- sn[null] end subgraph Doubly["Doubly linked: next and prev …

• Two Pointers & Sliding Window

  … lt; 10 → L++"] s2 -- s3["L=3, R=8 → 11 gt; 10 → R--"] s3 -- s4["L=3, R …

• Kafka vs RabbitMQ & the Kafka Ecosystem

  … databases (Debezium CDC), S3, MQTT, Salesforce. - Sink connectors push data out : Elasticsearch, S3, Snowflake, BigQuery, MongoDB, Postgres. json …

• Configuration, Secrets and Storage

  … web uploads and files, object storage such as S3 is often simpler than a mounted disk. It keeps …

• Choosing an Architecture

  … clear boundaries"] S2 -- S3["🔌 Stage 3<br/ hexagonal core<br/ where logic is rich"] S3 -- S4["🏙️ Stage …

• Environments, Workspaces, and Multiple Accounts

  … alias = "secondary" region = "us-west-2" } resource "aws s3 bucket" "secondary" { provider = aws.secondary bucket prefix = "academy-secondary …

• Testing, Preconditions, and Policy Checks

  … the plan boundary An organization might reject public S3 buckets, unapproved regions, missing owner tags, or production database …

• Storage, Search and Location Queries

  … Example --- --- --- Store a 2 GB video Object storage S3-like bucket, uploaded with a presigned URL. Find "spicy …

• Binary Search

  … 56)<br/ 56 gt; 23 → go left"] s2 -- s3["lo=5, hi=6 → mid=5 (23)<br/ found …

• Arrays & Strings

  … 4, 1]<br/ L=1, R=3 → swap"] -- s3["[5, 4, 3, 2, 1]<br/ L=2, R …

• Choosing a Programming Language

  … JavaScript"] S3[source] -- I3[interpreter] -- hot code -- J3[JIT compiler] -- CPU3[CPU] end - Ahead-of-time languages catch …

• Deploying & Operating Microservices

  … v1 v1 v1"] -- s2["v2 v1 v1 v1"] -- s3["v2 v2 v1 v1"] -- s4["v2 v2 v2 v1 …

• Resilience Patterns

  … S2[20 slots] -- R2["Recommendations 🐢<br/ max 20"] S3[60 slots] -- C2["Checkout ✅ fine"] end js import pLimit …

• DynamoDB Modeling, RDS Scaling and Data Resilience

  … Avoid it in application paths. - Items are limited to 400 KB ; store large blobs in S3 and keep …

• Practical Project: Deploy a Real CRM App on EKS

  … choose the right hosting Frontend type Best home Why --- --- --- Static export (SPA, next export ) S3 + CloudFront Cheapest, global …

• Vertical Slice Architecture & the Modular Monolith

  … order history"] direction TB b1[endpoint] -- b2["one SQL query"] -- b3[(db)] end subgraph S3["Slice: update price …

• AWS Security Building Blocks

  … Usually you ask a service such as S3, RDS, or Secrets Manager to encrypt with a KMS key …