horizontal scaling
compound.compound. adding more machines or servers to a system to help it handle more work. Instead of making one computer stronger, you share the tasks among many computers.
compound. the process of increasing the capacity of a system by adding more nodes or hardware instances to the existing pool. This approach distributes the workload across multiple machines rather than increasing the power of a single unit.
We used horizontal scaling to handle the increase in website visitors.
When the app went viral, the engineering team implemented horizontal scaling by adding fifty new servers to the cluster.
Unlike vertical scaling, which is limited by the maximum capacity of a single machine, horizontal scaling allows for theoretically infinite growth by distributing traffic across a distributed network.
A compound of the adjective horizontal, derived from the Greek horizon, and the verbal noun scaling, from the Latin scala. The term employs the geometric metaphor of a horizontal axis to denote the expansion of a system through the addition of equivalent units.
Etymology adapted from Wiktionary, available under CC BY-SA 4.0.
Commonly used in cloud computing and database management; often contrasted with 'vertical scaling'.
we did a horizontal scalingwe used horizontal scalingIn a technical context, 'scaling' is typically treated as an uncountable process rather than a countable event.
Last updated July 22, 2026