WCAG 2.2 AA vs EN 301 549: what's the actual difference?

WCAG 2.2 is the W3C's Web Content Accessibility Guidelines. EN 301 549 is the European harmonised standard that adopts WCAG and extends it for ICT contexts. For web content under the EAA, clause 9 of EN 301 549 is what binds you. The harmonised version of EN 301 549 (v3.2.1) covers WCAG 2.1 levels A and AA; an update to WCAG 2.2 is in preparation. Axively tests directly against WCAG 2.2 AA, that is, beyond the current harmonised standard. EN 301 549 also reaches beyond web content: clause 11 covers software (your JS framework is software) and clause 12 covers documentation and support services. Most WCAG-focused audits miss these. Axively tests web content against WCAG, the clause 9 area of EN 301 549. Clauses 11 (software) and 12 (documentation and support services) are not covered by an automated scan and require manual assessment.