Horizontal vs Vertical Scaling Explained (Scale Out vs Scale Up)

Welcome back to CSWithPradeep! In this video, we break down one of the most fundamental concepts in system design and software architecture: Horizontal Scaling (Scaling Out) vs. Vertical Scaling (Scaling Up). Whether you're designing a high-traffic distributed system or figuring out how to handle growing user loads in your .NET application, understanding when to add more machines versus upgrading your hardware is critical. What you'll learn: What is Vertical Scaling (Scale Up) and how it boosts single-server capacity. What is Horizontal Scaling (Scale Out) and how load balancers distribute traffic across a pool of nodes. Key differences in complexity, fault tolerance, scalability limits, and cost models. Which scaling strategy fits different architectural patterns. 🔔 Don't forget to Like, Subscribe, and Share for more software engineering and architecture content!