Available is a term that describes the state of something being ready for use, or having the capability to be used. It can refer to physical items such as products or services, or intangible items such as resources, information, or time. To be available, something must be accessible and ready for use in an efficient and timely manner. When something is unavailable, it is not able to be used due to a variety of reasons. Reasons can include lack of availability of the item itself (such as a product being out of stock), lack of access (such as not having access to a specific resource), or lack of capability (such as not having the skillset needed to use a certain technology).

