JSON-LD is a simple JSON-based Linked Data format.
It is also the recommeded Open Annotation serialization format, and the default format used to represent annotations in the RESTful Open Annotation API.
The benefits of JSON-LD include
Given the quality and quantity of existing material on JSON-LD, we won’t try to present it here but will instead simply refer interested readers to json-ld.org. Some basics are discussed also in the presentation of the OA context.