Extensibility
Definition: In software engineering, extensibility is a system design principle where the implementation takes into consideration future growth. It is a systemic measure of the ability to extend a system and the level of effort required to implement the extension.
What This Means: Extensibility is your insurance that an application will not be limited to only today’s functionality or interoperability with other applications. Newer applications are not necessarily more extensible—it’s all in their architecture.
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