Standardisation

W3C

• Produces W3C Recommendations on Web protocols
• Managed approach to developments
• Protocols initially developed by W3C members
• Decisions made by W3C, influenced by member and public review

IETF

• Produces Internet Drafts on Internet protocols
• Bottom-up approach to developments
• Protocols developed by interested individuals
• "Rough consensus and working code"

ISO

• Produces ISO Standards
• Can be slow moving and bureaucratic
• Produce robust standards

Proprietary

• De facto standards
• Often initially appealing (cf PowerPoint, PDF)
• May emerge as standards

PNG

HTML

Z39.50

Java?

PNG

HTML

HTTP

HTTP

URNwhois++

HTML extensions

PDF and Java?

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