The thing with XML is it's actually much lower level. There are no types inferred by an XML document. It's literally just chunks of data. JSON defines strings,

The thing with XML is it's actually much lower level. There are no types inferred by an XML document. It's literally just chunks of data. JSON defines strings, boolean, maps, arrays, numbers. It's conceptually easier to think about JSON with simple data sets but it's terribly inflexible and you have to think about how things are represented inside strings. A couple of thought exercises on JSON: 1. How do you represent an image inside JSON? 2. How do you represent a reference to another part of the data in JSON (consider a DAG for example)? 3. How do you represent an ordered set or an unordered set in JSON? 4. How do you represent an unsigned value in JSON?