A plain-language explanation
Yoast SEO is a WordPress plugin that supports the configuration of metadata, sitemaps and basic content optimization elements.
Where it helps in practice
Yoast helps manage metadata, sitemaps and technical signals, but its traffic-light score does not judge complete quality or ranking.
The decision before implementation
Configure content types, indexing, canonicals and organisation data before optimising individual phrases.
How to verify the result
Audit rendered tags, sitemaps, schema, theme conflicts and plugin-update effects.