Json Object VS Json Array

Easiest understanding:

When syntax is {} then this is JsonObject
When syntax is [] then this is JsonArray

JSONObject:

• Contains named values (key->value pairs, tuples or whatever you want to call them)
  like {ID : 1}
• Order of elements is not important
  a JSONObject of {id: 1, name: 'B'} is equal to {name: 'B', id: 1}.

JSONArray:

• Contains only series values
  like [1, 'value']
• Order of values is important
  array of [1,'value'] is not the same as ['value',1]

Additional info:
We can use the Array first approach if we intend to store a set of values with no need to identify uniquely.

[
   {
      "Employees":[
         {
            "Name":"Alan",
            "Children":[
               "Walker",
               "Dua",
               "Lipa"
            ]
         },
         {
            "Name":"Ezio",
            "Children":[
               "Kenvey",
               "Connor",
               "Edward"
            ]
         }
      ]
   }
]