Free lesson · AWS Fundamentals

How to use this course

Easy5 min read

What This Course Is

AWS Core Services is a reference course. It covers roughly 160 AWS services and concepts across 14 modules, each written as a self-contained topic you can read in isolation and return to later.

That structure is deliberate, and it is different from most courses you have taken. This course is not designed to be read once from front to back. It is designed to be the thing you look something up in - at your desk during a design discussion, or at eleven at night before an interview.

Every topic follows the same shape:

Section	What it gives you
What it is	The service or concept, defined precisely
How it works	The mental model, usually with a diagram
Decision criteria	When to use it, and what to use instead
Limits and quotas	The constraints that shape your design
Cost shape	How this generates charges
Common failure modes	What actually goes wrong in production
Why it matters in an interview	What interviewers listen for, and follow-up questions
Practice	Starter, intermediate, and advanced exercises

If you are looking something up, the section headers let you jump straight to the answer. If you are learning the topic properly, read it in order.

How This Course Fits With The Others

AWS Core Services is one of seven courses. The others build on top of it rather than repeating it.

graph TD
    C1[Course 1<br/>AWS Core Services<br/>160 reference topics]
    C1 --> C2[Course 2<br/>Developer on AWS]
    C1 --> C3[Course 3<br/>DevOps and Platform]
    C1 --> C4[Course 4<br/>SRE and CloudOps]
    C1 --> C5[Course 5<br/>Solutions Architecture]
    C2 --> C6[Course 6<br/>AWS for System Design Interviews]
    C5 --> C6
    C1 --> C7[Course 7<br/>Certification Prep]
    C3 --> C7
    C4 --> C7

This diagram shows how the seven AWS courses relate. Course 1, AWS Core Services, sits at the base with 160 reference topics. Four role courses build on it: Course 2 Developer on AWS, Course 3 DevOps and Platform, Course 4 SRE and CloudOps, and Course 5 Solutions Architecture. Course 6, AWS for System Design Interviews, builds on the Developer and Architecture courses. Course 7, Certification Prep, draws from Course 1 and the operations courses.

The important consequence: you will never be taught the same thing twice. When Course 2 discusses choosing between Lambda and Fargate, it assumes you can look up what each one is here. When a certification overlay in Course 7 maps an exam objective, it maps it to a topic in this course rather than restating it.

That means two things for you. Cross-links at the bottom of every topic are load-bearing, not decoration. And if a track course feels like it is moving too fast, the gap is almost always a Course 1 topic you have not read yet.

Reading Modes

There are three legitimate ways to use this course, and knowing which one you are in saves a lot of time.

Lookup. You need one fact - what a NAT Gateway costs, what the difference is between a Gateway Endpoint and an Interface Endpoint. Search, jump to the section, leave. Do not feel obliged to finish the topic.

Module sweep. You are learning a domain. Read a module front to back - Networking, or Databases - and do the intermediate exercises. Expect two to four hours per module.

Path following. You are working toward a role or an exam. Follow the sequence in the next topic, which pulls specific modules from this course in a specific order and hands you off to a track course. This is the mode most people should be in.

Tip: If you are new to AWS, resist the urge to start at Module 01 Topic 1 and read all 160 topics in order. It works, but it takes a long time before anything you learn becomes usable. Path following gets you to competence faster and sends you back here for the gaps.

What The Platform Adds

Interactive animation: A topic page with its AI Summary for revision and its AI Quiz for the check right after reading.

Two features change how you should study.

AI summaries. Every topic generates a summary. This is the tool for revision - read the topic properly once, use the summary for the fifth review before an interview. It is not a substitute for the first read.

AI quizzes. Every topic generates knowledge-check questions. Use them immediately after reading, while you still think you understood it. The gap between "that made sense" and "I can answer a question about it" is where actual learning happens.

Important: AI-generated quizzes test recall of what a topic says. They are not certification practice questions, which are a different genre - long scenario stems, four plausible options, and a qualifier like "most cost-effective" that decides between them. Course 7 has hand-written scenario drills for that. Do not mistake one for the other and walk into an exam under-prepared.

Interactive animation: An AI quiz tests recall of the topic, while a certification question is a long scenario decided by a qualifier.

What This Course Does Not Cover

AWS has well over two hundred services. This course covers around seventy in depth and names another thirty in comparison tables. The rest are deliberately excluded.

Left out entirely: Alexa and voice services, robotics, quantum computing, satellite ground stations, game server hosting, contact centre services, media production services, blockchain, and most industry-vertical services.

The exclusion criterion is simple: does it appear in developer, DevOps, or SRE job postings, in the certification blueprints we cover, or in real system design discussions? If not, learning it is vanity comprehensiveness - you would be trading time you could spend on IAM policy evaluation, which appears in every exam and every production incident.

Warning: Numbers in this course - quotas, limits, request rates, prices - are accurate as written and perishable. AWS changes them. Every topic that cites a figure says so, but treat it as a rule: before you design against a specific number, verify it in the Service Quotas console or the current pricing page. Module 01 Topic 8 covers exactly how to do that quickly, and it is worth reading early for that reason alone.

Practice

Exercise: Starter. Open the Course 1 module list and read the 14 module titles. Write down the three you already know something about and the three you know nothing about.

Intermediate. Pick any topic in Module 01 and identify which of the three reading modes you would use it in, and why.

Advanced. Before reading the next topic, write down your goal in one sentence - the job you want, the exam you need, or the problem you are trying to solve. Keep it. The path you choose next should serve that sentence, and you should be able to check it against that sentence later.