System Design Masterclass, 766 Interactive Lessons for Engineers
300+ hours of structured content from latency basics to distributed consensus. Interactive diagrams, runnable code, quizzes after every lesson. No videos. No subscription. ₹299 in India or $5 globally, lifetime.
What is included in the masterclass
Every lesson is built from the same template: explain the why, show the mechanism with a step-by-step diagram, give you code to run, then quiz you on it.
766 interactive lessons
21 categories covering everything from DNS to Raft consensus. Each lesson is as short or as long as the concept needs.
16 diagram types
Architecture, sequence, deployment, ER, state machine, flowchart, knowledge graph, and more. Diagrams build step by step as you read.
Runnable code editors
Sandpack-powered editors with starter code in Python, Node, and Go. Hit run, see the output, modify it, run again.
20 capstone projects
Full design walkthroughs for URL shortener, chat, ride-hailing, news feed, payment gateway, video streaming, and more.
Quizzes after every lesson
Multiple choice and fill-in-blank questions with instant feedback. Score 80% or above to mark a lesson complete.
Level certificates
Earn a Foundation, Intermediate, Advanced, and Master certificate. Each has a verification URL for LinkedIn.
Knowledge graph
See how every concept connects. The graph shows prerequisites, related topics, and where each idea is used in real systems.
Future content forever
We publish new lessons every month. Pay once, get everything we ship from now until the platform shuts down.
Who the masterclass is for
We wrote this for five distinct kinds of engineer. If you see yourself below, you are in the right place.
CS students and bootcamp graduates
Your first system design interview is closer than you think. The Foundation level assumes zero prior knowledge and gets you fluent in latency, throughput, load balancing, and caching before any senior engineer expects you to know them.
Junior to mid engineers (0 to 5 years)
You can ship features, but architecture decisions still feel like guesswork. The Intermediate level fills the gap with hands-on lessons on microservices, Kafka, Kubernetes, and observability that map directly to what you see at work.
Senior, staff, and principal engineers
You have shipped systems but want to close the gaps before a Staff or Principal interview. The Advanced level covers consensus, stream processing, exotic consistency models, and the resilience patterns Google and Amazon actually use.
FAANG and MAANG interview candidates
20 capstone projects walk you through the exact systems asked at Google, Meta, Amazon, Netflix, Uber, and Stripe interviews. You practice with the same interactive diagrams you would draw on a whiteboard in a live loop.
Career switchers and vibe coders
If you use AI to write code but still feel shaky on what is happening under the hood, this is for you. Every lesson starts with a real-world analogy, then builds up the mechanism with diagrams and runnable code.
How it works, end to end
The masterclass replaces the four things engineers actually need: a book, a video course, a coding playground, and an interview prep app. All in one place.
Pick a lesson, read the why
Every lesson opens with a real-world analogy and a concrete problem. You learn why the concept matters before you see the mechanism. Caching is explained through how Amazon ships boxes. Load balancing is explained through how a restaurant seats customers.
Watch the diagram build
Click next slide and the architecture diagram builds piece by piece, like a teacher drawing on a whiteboard. Each step has its own explanation. You see how data flows, where the bottleneck is, and where the failure modes hide.
Run the code
Most intermediate and advanced lessons ship with a runnable code editor. Write your own implementation, hit run, see the output. There is starter code if you get stuck and a worked solution to compare against.
Pass the quiz, move on
At the end of each lesson is a 3 to 5 question quiz. Score 80% or above and the lesson is marked complete in your progress tracker. Get a question wrong and you see the explanation immediately. Retries are unlimited.
Curriculum: 4 levels, 21 categories
The curriculum is structured as a directed graph. Each lesson lists its prerequisites so you always know what to learn next.
Foundation
119 lessons30 to 40 hours of content
Start from absolute zero. Master the building blocks every engineer is expected to know on day one of any backend interview.
Intermediate
437 lessons145 to 220 hours of content
The middle layer. Real systems are messy. This is where you learn how Netflix, Uber, and Stripe actually keep things running.
Advanced
178 lessons90 to 135 hours of content
Staff and principal level material. Consensus protocols, stream processing, exotic consistency models, and the resilience patterns that keep planet-scale systems alive.
Capstone
20 lessons40 to 60 hours of content
Full design walkthroughs for the systems interviewers actually ask about. URL shortener, chat system, Uber, Twitter timeline, payment gateway, and more.
How the masterclass compares
We respect every platform on this list. They each helped engineers get to where they are. Here is the honest difference in scope and format.
| Feature | System Design Academy | ByteByteGo | DesignGurus | Educative |
|---|---|---|---|---|
| Number of lessons | 766 | About 80 articles | 65 lessons | Varies per course |
| Format | Interactive slides, diagrams, code, quizzes | Articles and short videos | Text plus illustrations | Text plus code playgrounds |
| Diagram types | 16 (architecture, sequence, deployment, ER, state, more) | Static illustrations | Static illustrations | Static plus some interactive |
| Runnable code | Yes, in browser via Sandpack | Limited | Limited | Yes, code playgrounds |
| Quizzes | Yes, after every lesson | Limited | Yes | Yes |
| Capstone projects | 20 full design walkthroughs | Some case studies | 10 to 15 | Varies |
| Price (global, lifetime equivalent) | $5 one-time, lifetime | $189 per year | $169 per year | $149 per year |
| India pricing (PPP) | ₹299 one-time, lifetime | Not available | Not available | Limited |
| Updated for 2026 | Yes, including AI-native architectures | Yes | Yes | Varies by course |
Pricing data current as of 2026. Check each vendor for the latest numbers.
One payment, lifetime access
No subscription, no renewal email, no surprise charges. Pay once and the masterclass is yours forever, including every future lesson we publish.
Global Access
One-time, pay via PayPal
- All 766 interactive lessons
- 16 diagram types, animated step-by-step
- Runnable code editors in browser
- Quizzes after every lesson
- 20 capstone design projects
- 4 level certificates
- All future content included
- 11 free Foundation lessons to try first
India Access
One-time, pay via UPI or card
- All 766 interactive lessons
- 16 diagram types, animated step-by-step
- Runnable code editors in browser
- Quizzes after every lesson
- 20 capstone design projects
- 4 level certificates
- All future content included
- 11 free Foundation lessons to try first
Read eleven Foundation lessons first
Free, no signup. If the way these lessons teach doesn't change how you think about system design, the rest won't either. Try before you decide.