Introduction to System Design for Scalable Software

When building modern software, writing clean code is only half the battle. To support millions of users without crashing, software must be built on a resilient, well-planned architecture. This course introduces you to the core concepts of system design, helping you transition from a coder to a system architect who understands how different components interact at scale. You will start by learning essential terminology and the fundamental trade-offs involved in system design. From there, you will explore how to transition from monolithic architectures to microservices, and how to select the right database patterns for your application's needs. What you'll learn: - Understand the core principles of system design, including scalability, reliability, and availability - Compare vertical and horizontal scaling to make informed infrastructure decisions - Analyze the trade-offs between SQL and NoSQL databases for different data storage needs - Explore modern architectural patterns, including microservices and event-driven design - Learn how caching, load balancing, and content delivery networks optimize system performance - Discover the basics of modern system observability, monitoring, and fault tolerance This text-based course guides you step-by-step through theoretical foundations, real-world architectural scenarios, and practical design patterns. Each concept is explained in clear, accessible language with structured text and design workflows. This course is designed specifically for beginner developers, software engineers transitioning to system-level thinking, and technical project managers with no prior system design experience. No advanced infrastructure background is required. Start reading today to build the conceptual foundation needed to design modern, scalable software systems.