📡 Syndication Protocols

Feed Engineering: RSS 2.0 & Atom 1.0 XML Standards and Media

By Content Syndication & SEO Review Board•September 2, 2026

Executive Publishing Summary

Building compliant XML feeds: RSS 2.0 vs Atom 1.0 specs, Dublin Core metadata, Media RSS (MRSS) image enclosures, and escaping CDATA blocks.

High-performance feed generation requires strict XML validation, accurate RFC 822/RFC 3339 timestamps, and CDATA wrapping for rich HTML formatting.

1. RSS 2.0 vs. Atom 1.0 Comparison

Feature	RSS 2.0 (RFC 822)	Atom 1.0 (RFC 4287)	Recommendation
Date Standard	`Wed, 02 Sep 2026 12:00:00 GMT`	`2026-09-02T12:00:00Z` (ISO 8601)	Atom for modern APIs
Unique Identifier	`<guid isPermaLink="true">`	`<id>urn:uuid:...</id>`	Atom guarantees uniqueness

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