Technical SEO is the foundation everything else sits on. If search engine crawlers cannot access, render, and index your pages efficiently, even the best content will struggle to rank.
Start with site speed. Compress images, enable caching, and minimize render-blocking JavaScript. WordPress sites in particular benefit from a good caching plugin and a lean theme.
Next, audit your XML sitemap, robots.txt, and canonical tags. Structured data markup, such as JSON-LD schema, helps search engines understand your content and can earn you rich results in the SERPs.