In-depth tutorials, a built-in code editor, and an AI assistant — everything you need to ace technical interviews and build world-class systems.
Structured courses taught by engineers from top companies, with real code and real-world examples.
Scalability, load balancing, caching, databases, and real-world case studies.
Event streaming, topics, partitions, producers, consumers, and Kafka Streams.
SOLID principles, design patterns, and object-oriented system design.
Core AWS services, architecture best practices, and hands-on cloud patterns.
A floating AI assistant is always one click away. Ask for explanations, examples, or interview tips without leaving the page.
The AI knows which topic you're reading and gives answers tailored to that context.
The AI assistant is completely free — no message limits, no paywalls.
AI Assistant
Load Balancing — System Design
"The System Design course is the best resource I've found. I cleared my Amazon interview with L5 offer after going through it."
Rohan Mehta
SDE-2 at Amazon
"The Kafka course is incredibly detailed. Went from zero to implementing real-time pipelines at work within 2 weeks."
Sneha Gupta
Senior Engineer at Flipkart
"The AI assistant is a game-changer. Being able to ask questions while reading without switching tabs is so productive."
Vikram Nair
Staff Engineer at Swiggy