Here are some examples of where SEO and accessibility may overlap:
Video Transcription
Image Title
Image alt attribute
Title tag
Title tags H1, H2, etc.
Link Anchor Text
Content Order
Text size and color contrast
Semantic HTML
If you develop pages yourself, I recommend learning more turkey mobile database about the many things you can do with accessibility beyond the overlap with SEO, like understanding ARIA attributes . Take a look at the W3C Web Content Accessibility Guidelines and you'll see that accessibility considerations are much more complex than what we typically think about in technical SEO. If you think technical SEO is interesting, wait till you see this.
Optimize for accessibility or SEO
If you are optimizing for accessibility, you are probably covering those bases of technical optimization where accessibility and SEO overlap. But it depends on the SEO strategy you take, not the other way around.