What skills does an AWS engineer need?
It depends how far into the ecosystem you want to go
Before touching any single service, it helps to understand cloud computing itself — the difference between IaaS, PaaS, and SaaS, public vs private vs hybrid cloud, AWS's global infrastructure of regions and availability zones, and the Shared Responsibility Model that defines what AWS secures versus what you do.
From there, almost every path runs through the same three essentials: IAM for access control, VPC for networking, and EC2 for compute. After that it branches by direction — storage and content delivery, managed databases and containers, or going fully serverless with Lambda.
The best way to learn is to build a simple app and use these services to deploy it end to end, rather than studying each one in isolation. A working grasp of the Well-Architected Framework rounds things out once you're designing real systems, not just standing up individual resources.
The AWS Roadmap
Work through these in order, then deploy a small app using what you've learned
Essentials — IAM, VPC & EC2
Access control, networking, and compute — the three services almost everything else depends on.
Core Services — S3, SES, Route53, CloudWatch & CloudFront
Storage, email, DNS, monitoring, and content delivery — the next layer to learn.
Databases, Caching & Containers
Managed data stores and container orchestration for running real workloads.
Serverless
Running code without managing servers at all.
GitHub Projects
Real, buildable projects to put on your own GitHub
Infrastructure as Code Practice
Deploy a VPC and EC2 stack from these official CDK examples to see IAM, networking, and compute come together as real infrastructure code.
Serverless Pattern Library
Deploy a Lambda plus API Gateway pattern from this library to practice event-driven serverless architecture end to end.
Containerized App on ECS
Deploy this simple containerized app to ECS to see clusters, tasks, and services working together in a real deployment.
Study a Production VPC Module
Read through a widely-used Terraform module to see CIDR blocks, subnets, and route tables assembled the way real teams structure them.
Frequently Asked Questions
Common questions from people starting out with AWS
Do I need to learn all of AWS?
No — AWS has hundreds of services, and no single engineer uses them all. Focus on IAM, VPC, and EC2 first, then branch into the services that match the kind of system you're building.
Is AWS free to use?
AWS offers a free tier covering limited usage of services like EC2, S3, and Lambda for a set period or amount, which is enough to practice most of this roadmap. Usage beyond those limits is billed, so it's worth watching your resources closely while learning.
Do I need to know networking before AWS?
Not in depth, but a basic understanding of IP addressing, subnets, and how routing works will make VPC concepts like CIDR blocks, route tables, and gateways click much faster.
Should I learn AWS or another cloud provider first?
AWS holds the largest market share and the broadest job demand, which is why it's a common starting point. That said, the core concepts — IAM, networking, compute, storage — transfer well to Azure or Google Cloud once you understand them on one platform.
What's the difference between EC2 and Lambda?
EC2 gives you a persistent virtual server you manage and pay for continuously. Lambda runs your code only when triggered and you're billed per invocation, trading control over the environment for less operational overhead.
How do I avoid a surprise AWS bill?
Set up billing alerts and a budget in the AWS console early, shut down or terminate resources like EC2 instances and RDS databases when you're not using them, and keep an eye on data transfer and storage costs, which add up quietly.
Track complete
From IAM and networking through compute, storage, databases, and serverless — that's an opinionated path through the AWS services most engineers actually use. Deploy a real app with them, then let the direction you enjoy pull you deeper into containers, data, or serverless.
Where next?
Keep exploring by domain or drill into a single skill