[12] These were taken up and evolved as NGSIv2[13] by the European Future Internet Public-Private-Partnership (PPP), which spawned the FIWARE open source community.
Complementing this metamodel, the NGSI-LD information model specification also provides a cross-domain ontology[15] that defines key constructs related to spatial, temporal or system-composition characteristics of entities.
In order to allow interoperability between NGSI-LD users, standardized entities are collaboratively defined at Smart Data Models Program and made available at its repository with an open-source license.
API operations comprise: NGSI-LD was initiated by partners of the FIWARE programme, and is primarily used by the FIWARE open source community,[17] supported by the FIWARE Foundation[18] as well as a diverse range of other projects and users such as below: NGSI-LD is the result of an evolution of Context Interfaces that started as part of the "Next Generation Service Interfaces" (NGSI) suite published by the Open Mobile Alliance (OMA) in 2012, which is also the source of the acronym NGSI.
[12] The NGSI standard from OMA and its intermediary evolutions relied on a classical Entity–attribute–value model and an XML-based representation.
The NGSI Context Interfaces were adapted by the FI-WARE project, which developed the platform for the European Future Internet Public-Private-Partnership (PPP).
The OMA NGSI Context Interfaces got an HTTP binding with a JSON representation, referred to as NGSIv1, which included both NGSI-9 and NGSI-10.
ETSI ISG CIM continues to evolve the NGSI-LD Information Model and API.