Three Generations of Protocols
Real World Examples Table-of-Contents 2nd Generation: Meta-Data Protocols
Change-size

Web protocols can be broadly classified into three "layers":

  1. architectural protocols: HTML and HTTP
  2. meta-data, negotiation, and signature protocols: annotations, PICS (as spec'd), XML/CSS/RDF and JEPI/PEP
  3. social protocols: PICS (as applied), P3P

Joseph Reagle, HLS/W3C/LCS/MIT

 W3C

5 of 14