stac

Stac is a name used for several topics in technology and geospatial data. The most widely known usage is the SpatioTemporal Asset Catalog (STAC), an open standard for describing geospatial data assets in a way that facilitates discovery, access, and interoperability across catalogs. STAC defines a simple data model built around catalogs, collections, items, and assets, and relies on JSON metadata and link-based relationships to enable scalable, browser- and API-friendly searches. It is maintained by a community of developers and organizations and is used by government agencies, research institutions, and commercial providers to unify the way imagery, vector data, time series, and related assets are described and accessed.

Stac Electronics refers to a former American technology company that produced data compression products for storage systems. Active during the 1980s and 1990s, the firm contributed to the development of hardware and software compression technologies intended to reduce storage requirements and improve data transfer efficiency. The company played a role in the evolution of storage performance solutions during that period and is noted in historical accounts of the computer and storage industries.

In other contexts, “Stac” or the acronym STAC may appear in various organizational names or technical discussions, often reflecting the same roots in storage, cataloging, or data management. The term’s meaning is thus context-dependent, and clarification is typically required to determine the intended reference.