# aws

Cold starts are the silent SLO killer in serverless architectures. You've built a beautiful Lambda function, deployed it, and everything looks great in you...

You opened your AWS bill last month and did a double-take. Data transfer charges that were $200 last quarter are now sitting at $1,800. Nothing major chang...

Deploy containers on AWS ECS Fargate — no EC2 instances to manage. Covers task definitions, services, load balancers, environment variables, secrets from SSM/Secrets Manager, auto-scaling, and CI/CD integration.

Step-by-step guide to launching a production-ready EKS cluster on AWS — node groups, IAM roles, VPC configuration, managed add-ons, kubeconfig setup, and cost optimization. Both eksctl and Terraform approaches covered.

Cross-account resource access in AWS is like giving someone the keys to your house—you want them to get in, but only through the right door, at the right t...

Diagnose and recover AWS EC2 instances with failed system or instance status checks using stop/start, volume rescue, and auto-recovery techniques.

Systematically troubleshoot and fix AWS S3 Access Denied errors caused by IAM policies, bucket policies, ACLs, and encryption settings.

Build AWS IAM policies using least privilege without locking yourself out — practical patterns for roles, service accounts, and permission boundaries.

How to design an AWS Landing Zone with Organizations, SCPs, and account vending that scales from 5 to 500 accounts without becoming a mess.

How to design multi-cloud connectivity between AWS and Azure using Transit Gateway and Virtual WAN — patterns, pitfalls, and cost tradeoffs.

AWS CLI cheat sheet with copy-paste commands for EC2, S3, IAM, Lambda, ECS, CloudFormation, SSM, and Secrets Manager operations.

A data-driven playbook for cutting AWS costs across compute, storage, networking, and reserved capacity with real numbers and actions.

Use dynamic inventories to automatically discover and manage cloud infrastructure — AWS EC2, Azure VMs, and GCP instances with Ansible inventory plugins.

Navigate the essential AWS building blocks — EC2, S3, VPC, IAM, RDS, Lambda, and EKS explained for DevOps engineers with practical examples.

Generate short-lived database credentials, AWS IAM roles, and PKI certificates with Vault dynamic secrets — eliminating long-lived credentials from your infrastructure.

Cut your AWS Lambda costs by 40-70% with memory right-sizing, ARM/Graviton migration, and smart provisioned concurrency strategies.

Set up automated cloud cost anomaly detection with AWS Cost Anomaly Detection and custom Lambda monitors to catch runaway spend early.

A data-driven comparison of AWS Reserved Instances vs Savings Plans — with decision frameworks, break-even math, and real purchase recommendations.

Find and fix oversized EC2 instances with this practical right-sizing guide. Save 30-50% on AWS compute costs using CloudWatch metrics and tooling.

A complete tagging strategy for cloud cost allocation — including the Terraform enforcement, AWS policies, and org-wide rollout plan that actually works.

A practical guide to S3 storage class selection and lifecycle policies — with real dollar figures showing how to cut storage costs by 60-80%.

A battle-tested guide to running Kubernetes workloads on spot instances — safely, reliably, and at 60-90% less than on-demand pricing.