Technical Definition
Caching stores copies of content to serve faster on subsequent requests. Types: browser caching (stores assets locally), server caching (pre-generates pages), CDN caching (distributes cached content). For SEO: improves page speed, reduces server load, enhances user experience. Implement via cache-control headers, server configuration, or caching plugins. Be careful with dynamic content and personalization.
Simple Explanation (ELI13)
Caching is saving a copy of something so you don't have to rebuild it every time. When someone visits your site, instead of creating the page from scratch, you can serve a saved copy instantly. This makes your site much faster. Your browser also caches images so it doesn't re-download them every visit.
Related Terms
Page Speed, CDN, Performance, Browser Cache
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