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JSON

As explained in Building Web APIs with ASP.NET Core

JSON is a text-based data interchange format that represents structured values using objects, arrays, and primitive values.

JSON (JavaScript Object Notation) is a text-based format for exchanging structured data. A REST API can use it to send data to and from clients. Compared with the XML messages used by SOAP, JSON is presented as easier to work with and faster to parse. section 1.1.4

In a board-game CRUD API, data-transfer objects (DTOs) provide the means to exchange JSON data with the client. The API handles requests through HTTP GET, POST, PUT, and DELETE methods while EF Core performs the associated database work. section 5.0

Choose the format to suit the exchange: REST supports JSON, but CSV is identified as an alternative for huge data sets when bandwidth is a major concern. No particular JSON payload or serialization setting is specified here. section 1.1.4 section 5.0

How Building Web APIs with ASP.NET Core covers it

How deep it goes
Identifies JSON and its practical role, but stops short of payload syntax, serialization behavior, or configuration steps.
Examples
Uses a board-game API’s planned DTO-based client exchanges as context, without showing a JSON payload.
What it assumes
Assumes basic database manipulation for the surrounding CRUD work, but requires no specific SQL knowledge.
What you can do after
Evaluate/understand JSON as a REST format and as data exchanged through DTOs; implementation details remain unspecified.
How it connects
Connects JSON to REST, SOAP, XML, CSV, data-transfer objects, CRUD, and EF Core.
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This explainer was generated by Manning's knowledge graph from the text of Building Web APIs with ASP.NET Core. The section links point to the parts of the book it draws on.