Microsoft don't have any generically extensible binary format that they use consistently, like Google does with protobufs. Besides, XML isn't so bad. Look at t

Microsoft don't have any generically extensible binary format that they use consistently, like Google does with protobufs. Besides, XML isn't so bad. Look at the alternative: Apple went with a generic binary config format for macOS (binary plists) but then introduced an XML version anyway. As an industry we've never got any good at managing the dichotomy between efficient-for-machines binary formats and efficient-for-humans text formats.