Compute
AWS compute services like EC2, Lambda, ECS, EKS, and Fargate. Understand instance types, containers, serverless, and auto scaling — the foundation of every workload running on AWS.
Lambda vs EC2: Serverless or Virtual Machine? (2026 Decision Guide)
Compare AWS Lambda (serverless, event-driven) vs Amazon EC2 (virtual machines). Cold starts, 15-minute limit, pricing per ms vs per second, and when to pick each.
Lambda Function URL: Direct Invocation & Use Cases
What is a Lambda Function URL? A dedicated HTTPS endpoint for direct Lambda function invocation. Learn its benefits and when to use it.
Lambda SnapStart: Reduce Cold Starts & Improve Performance
AWS Lambda SnapStart optimizes function startup time by caching initialized states. Learn how it works and when to use this performance feature.
AWS App Runner: Deploy Containerized Apps Easily
AWS App Runner is a fully managed service for deploying containerized web apps and APIs. Go from source code to scalable apps in minutes. Learn when to use it.
Elastic GPUs: How It Worked & When to Use It
Amazon Elastic GPUs (now Elastic Graphics) offered network-based graphics acceleration for EC2. Learn about its features and historical use cases.
EC2 Instance Store: High Performance Temporary Storage
EC2 Instance Store offers temporary, block-level storage physically attached to your EC2 instance for high I/O performance. Learn when to use it.
EC2 Reserved Instance: Save Up to 72% on Compute
An EC2 Reserved Instance offers significant savings (up to 72%) on compute costs for steady-state workloads. Commit to a 1 or 3-year term for lower pricing. Learn when to choose it.
EC2 Dedicated Hosts: Use Existing Licenses on AWS
Amazon EC2 Dedicated Hosts are physical servers for your exclusive use. Bring your own licenses and meet compliance needs. Learn when to choose it.
EC2 Placement Groups: How It Works & When to Use It
EC2 Placement Groups logically group instances to control physical placement on AWS hardware. Optimize for low latency or high availability. Learn when to choose it.
AWS Nitro System: How It Works & Benefits
The AWS Nitro System is the platform for modern EC2 instances, offloading tasks to dedicated hardware for better performance & security. Learn when to use it.
AWS Graviton Processor: Price-Performance & Efficiency
AWS Graviton processors are custom Arm-based CPUs for EC2, offering superior price-performance and energy efficiency. Learn how they work and when to use them.
AWS Local Zones: How It Works & When to Use It
AWS Local Zones extend AWS Regions to place compute, storage, and database services closer to end-users for single-digit millisecond latency. Learn when to choose it.
AWS Wavelength: Low Latency Compute at the 5G Edge
AWS Wavelength embeds AWS services in 5G networks for single-digit millisecond latency. Learn how it works and when to use it for edge applications.
AWS Outposts: Extend AWS to Your Data Center
AWS Outposts is a fully managed service extending AWS infrastructure to on-premises. Use AWS APIs locally for low-latency processing. Learn when to choose it.
Amazon ECR: Secure Container Image Registry for AWS
Amazon ECR is a fully managed, secure container registry for Docker & OCI images. Store, manage, and deploy your container assets. Learn when to use it.
ECS Cluster: How It Works & When to Use It
An ECS Cluster is a logical grouping of tasks for running containers. Learn how it works, its benefits, and when to use it for scalable containerized applications.
ECS Service: How It Works & When to Use It
An ECS Service runs and maintains specified task instances in an ECS cluster, ensuring your containerized apps stay running. Learn its benefits and use cases.
ECS Task Definition: How It Works & When to Use It
An ECS Task Definition is a JSON blueprint for your application's containers, detailing Docker images, CPU, memory, and networking. Learn its use cases.
Launch Template: How It Works & When to Use It
An EC2 Launch Template defines parameters for launching EC2 instances, standardizing configurations for reuse. Learn when to choose it.
Lambda Environment Variables: How They Work & When to Use
AWS Lambda environment variables are key-value pairs to control function behavior without code changes. Separate config from logic. Learn how they work and when to use them.
Lambda Timeout: How It Works & When to Use It
AWS Lambda Timeout: Maximum execution time for a function. Learn how it works, its limits, and when to configure it for optimal performance.
Lambda Concurrency: How It Works & When to Use It
AWS Lambda Concurrency is the number of requests a function can serve simultaneously. Understand its limits and scaling behavior. Learn when to choose it.
EC2 Key Pair: Securely Access Your Instances
An EC2 Key Pair is a security credential set for proving identity to connect to EC2 instances. Learn how it works and when to use it.
EC2 User Data: Automate Instance Setup & Configuration
EC2 User Data passes scripts to EC2 instances at launch for automated setup. Learn how it works and when to use it for efficient cloud management.
Fargate vs EC2: How It Works & When to Use It
Fargate vs EC2: Understand the difference between AWS Fargate (serverless containers) and EC2 (virtual servers). Learn when to choose each for your workloads.
Amazon Lightsail: Simple VPS for Web Apps on AWS
Amazon Lightsail is AWS's simple VPS with bundled compute, storage, and data transfer from $3.50/month. Learn instance plans, containers, managed databases, and EC2 migration.
AWS Lambda: Serverless Compute, Limits & When to Use It
AWS Lambda runs code without servers, scaling automatically. Learn limits (15 min, 10 GB memory), runtimes, pricing, cold starts, and common event-driven patterns.
Lambda Layers: Reusable Dependency Packages Explained
AWS Lambda Layers are reusable ZIP packages for shared code, libraries, and runtimes. Learn the 250 MB limit, 5 layers per function, /opt extraction, and container image alternatives.
Lambda Cold Start: Causes, Mitigations & SnapStart Explained
AWS Lambda cold start latency explained: cold vs warm, runtime impact (Java/.NET vs Python/Node), VPC ENIs, SnapStart, Provisioned Concurrency, and practical mitigations.
AWS Fargate: Serverless Containers for ECS & EKS
AWS Fargate runs containers without managing servers. Learn how it works with ECS & EKS, task sizing, networking, Fargate Spot (70% off), pricing, and when to use it vs EC2.
AWS Elastic Beanstalk: PaaS for Web Apps on EC2 & ELB
AWS Elastic Beanstalk is a PaaS that deploys web apps to EC2, ELB, and ASG. Learn supported platforms, environments, deployment policies, eb CLI, and modern alternatives.
Amazon EKS: Managed Kubernetes on AWS Explained
Amazon EKS is managed Kubernetes on AWS. Learn clusters, node options (managed, Fargate, Auto Mode), IRSA, add-ons, pricing ($0.10/hr control plane), and EKS vs self-managed.
Amazon ECS: Container Orchestration on AWS Explained
Amazon ECS is AWS's native container orchestration service. Learn clusters, task definitions, services, Fargate vs EC2 launch types, pricing, and ECS vs EKS.
ECS vs EKS: How to Choose AWS Container Orchestration
ECS vs EKS compared: free vs $0.10/hr control plane, Fargate/EC2/Auto Mode, IAM task roles vs IRSA, ecosystem fit, migration paths, and a clear decision framework.
Amazon EC2: Instance Types, Pricing Options & When to Use It
Amazon EC2 is AWS virtual servers billed per-second. Learn instance families (T, M, C, R, G, P), pricing options (On-Demand, RI, Spot, Savings Plans), and exam tips.
EC2 Spot Instances: Save Up to 90% on Spare Capacity
EC2 Spot Instances use spare AWS capacity for up to 90% off On-Demand. Learn the 2-minute warning, Spot Fleet, capacity pools, interruption behavior, and best use cases.
EC2 Instance Types: Complete Guide to Families & Sizes
Understand all AWS EC2 instance types: General Purpose (T, M), Compute Optimized (C), Memory Optimized (R, X), Storage (I, D), Accelerated (P, G, Inf, Trn). Choose the right one.
AWS Batch: Managed Batch Jobs on EC2, Fargate & Spot
AWS Batch orchestrates batch jobs across EC2, Fargate, and Spot compute environments with queues, array jobs, multi-node parallel jobs, and Step Functions / EventBridge integration.
EC2 Auto Scaling Group: Capacity, Policies & Instance Refresh
EC2 Auto Scaling Group (ASG) maintains desired/min/max capacity with launch templates, scaling policies, lifecycle hooks, instance refresh, and mixed-instance Spot support.
Amazon Machine Image (AMI): EC2 Templates Explained
Amazon Machine Image (AMI) is the template used to launch EC2 instances. Learn EBS vs instance-store AMIs, x86_64 vs arm64, sharing, Image Builder, and AMI lifecycle.