JavaScript Object Notation (JSON) is simply a text-based data format. It is used to transmit data objects consisting of attribute-value pairs.
Here is a simple example of JSON structure about a company.
{ "company_name": "Very big company", "company_location": "On earth", "company_founded": 2016, "employees": [ { "name": "Joe", "role": "CEO" }, { "name": "Amy", "role": "CFO" }, { "name": "Ben", "role": "CIO" }, { "name": "Ali", "role": "Worker" } ] }