AWS Developer Associate Introduction AWS SDKs and CLI Deep Dive AWS SAM Serverless Application Model API Gateway REST HTTP APIs AWS Lambda Advanced Patterns DynamoDB Developer Patterns AWS CI/CD CodePipeline CodeBuild Amazon Cognito Authentication AWS Step Functions Orchestration EventBridge Developer Patterns Amazon ECR Container Registry ECS Fargate Container Deployment AWS X-Ray Distributed Tracing Secrets Manager Parameter Store CloudWatch Logs Insights Developer AWS AppSync GraphQL CodeArtifact Maven npm PyPI AWS Cloud9 Cloud IDE AWS AppConfig Feature Flags Developer Testing Best Practices AWS CodeCommit Git Repository AWS CodeDeploy Deployment AWS CodeStar Collaborative Dev Amazon S3 Developer Patterns Kinesis Data Streams Analytics AWS CDK Infrastructure Code AWS Amplify Fullstack Framework AWS CloudShell Browser IDE Serverless Application Repository AWS Developer Security Best Practices

Back to Lessons

AWS SDKs and CLI Deep Dive

April 5, 2026

Programmatic AWS Access

Use SDKs (Node.js/Python/Java) and CLI for automation.

SDK Authentication Flow

Node.js SDK v3 Example:
const {S3Client, PutObjectCommand} = require("@aws-sdk/client-s3");
const client = new S3Client({region: "us-east-1"});

Python Boto3:
import boto3
s3 = boto3.client("s3")
s3.upload_file("local.jpg", "bucket", "remote.jpg")

CLI Commands:
aws s3 cp file.txt s3://mybucket/
aws ec2 describe-instances --filters "Name=tag:Env,Values=Prod"

Credential Priority

IAM Role (EC2/Lambda/ECS)
Environment variables (AWS_ACCESS_KEY)
Shared credentials (~/.aws/credentials)
Config file (~/.aws/config)
MFA/IAM Identity Center

Previous Lesson Next Lesson