A comprehensive video course by Mikhail Smarshchok on mastering system design fundamentals and developing the mindset needed for success in system design interviews and beyond. The program emphasizes core design concepts, widely used best practices, and the reasoning process behind architectural decisions. It covers non-functional requirements (availability, fault tolerance, scalability, performance, durability, consistency, security, cost), computing environments (servers, VMs, containers, serverless), communication models, networking, caching, queues, databases, partitioning, autoscaling, failure handling, and optimization techniques. practical scenarios and quizzes reinforce learning. By course end, students gain both the technical toolkit and strategic thinking essential for designing reliable, scalable, and maintainable systems—and for excelling in engineering interviews.