Scalability

[Lizzy Liz]

the ability of a business or system to grow larger:

[Sonia]

The capacity to be changed in size or scale.

[riiiilhuvono]

the quality of being scalable

[Monty]

In electronics, scalability is the ability of a system, network, or process to handle a growing amount of work in a capable manner or its ability to be enlarged to accommodate that growth. For example, it can refer to the capability of a system to increase total throughput under an increased load when resources are added. An analogous meaning is implied when the word is used in an economic context, where scalability of a company implies that the underlying business model offers the potential for economic growth within the company.
Scalability, as a property of systems, is generally difficult to define and in any particular case it is necessary to define the specific requirements for scalability on those dimensions that are deemed important. It is a highly significant issue in electronics systems, databases, routers, and networking. A system whose performance improves after adding hardware, proportionally to the capacity added, is said to be a scalable system.
An algorithm, design, networking protocol, program, or other system is said to scale if it is suitably efficient and practical when applied to large situations. If the design or system fails when a quantity increases, it does not scale. In practice, if there are a large number of things n that affect scaling, then n must grow less than n². An example is a search engine, that must scale not only for the number of users, but for the number of objects it indexes. Scalability refers to the ability of a site to increase in size as demand warrants.

[Justin Bieber]

The property of being scalable.

[engladNak]

Scalability is the capability of a system, network, process, or software to handle a growing amount of work or its potential to be enlarged in order to accommodate that growth. It refers to the ability of something to adapt and perform efficiently even as its size or volume increases. Scalability can also be related to the potential of a system to expand to accommodate increasing demand.