I worked to see the difference between the *XML fast infoset* and the
*Protocol Buffers* (although I'm not aware about what are internal
things happening therein).

I found that for a typical data to be transferred across the wire for
size of 500KB that a XML file would represent has corresponding file
size as 300KB for PB binary and around 130KB for XML Fast Infoset
binary file.

Timings to parsing and serializing is extremely good for Protocol

What makes a difference if we consider XML fast infoset binary against
PB binary in terms for Sizes, speed to parse them up etc.?

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