Vertical scaling, also known as "scaling up", involves increasing the capacity of a single server by adding more resources like CPU, RAM, or storage to make it more powerful. This approach is simpler to manage initially but is ultimately limited by the physical constraints and maximum capacity of the individual hardware unit. In contrast, horizontal scaling, or "scaling out", expands capacity by adding more servers or nodes to a system, distributing the workload across multiple machines. This method offers virtually unlimited growth potential and significantly enhances both fault tolerance and high availability by eliminating a single point of failure. While vertical scaling is often quicker for initial improvements, horizontal scaling provides greater elasticity and resilience, albeit typically requiring a more complex distributed system architecture and sophisticated load balancing mechanisms. More details: https://www.arpas.com.tr/chooselanguage.aspx?language=7&link=https://4mama.com.ua/