We've touched upon this a few times here and there, but here's a recap into how DatoCMS makes your Media SEO management a bit nicer:
Automatic image optimization using presets from imgix parameters that apply to the entire project,
Manual control over file titles, alt-text, and description per locale and file,
Automatic image tagging and metadata management for easier accessibility and licensing with the option to override certain fields like tags,
Custom fields for any further data enrichment that needs to happen per file, and
Powerful optimizations to serve the best format and size of asset per device ensuring technical performance isnt' sacrificed.