The quality/ability/extent of being upgradable.
Upgradability is a system quality attribute, which is a measure of how well a software system can be modified or enhanced to meet changing needs. It is a non-functional requirement that describes the ease with which a system can be upgraded or updated in terms of hardware, software, or functionality.
Upgradability is a cross-functional constraint because it affects multiple aspects of a system, including its design, architecture, and implementation. For example, a system's upgradability may be influenced by its modularity, reusability, compatibility, and scalability.
An upgradable system is desirable because it enables organizations to keep up with changing business requirements, technology advancements, and security threats. In addition, a system that is easy to upgrade can reduce the cost and effort associated with system maintenance, testing, and deployment.
Define upgradable: Upgradable refers to the ability of a computer or software to be upgraded or improved with newer or better components or versions. This may involve replacing or adding hardware components such as RAM, hard drives, or graphics cards, or upgrading to a newer version of software. An upgradable system or software is designed with the flexibility to be expanded or improved over time, allowing for increased performance, functionality, or compatibility with new technologies.
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Dictionary: upgrade: Upgrade. an increase or improvement. a new version, improved model, etc. an increase or improvement in one's service, accommodations, privileges, or the like.