SEO, or Search Engine Optimization, is the practice of optimizing web pages and content to improve their visibility and ranking in search engine results pages (SERPs). It involves various strategies and techniques aimed at making a website more search engine-friendly and thus more likely to appear higher in organic search results.

Some key components of SEO include:

1. Keyword Research: Identifying the terms and phrases that people are searching for related to your content or business.
2. On-Page SEO: Optimizing individual web pages to improve their relevance to specific keywords and to make them more accessible to search engine crawlers. This includes optimizing titles, meta descriptions, headings, URL structures, and content.
3. Off-Page SEO: Building backlinks from other websites to improve the authority and trustworthiness of your site in the eyes of search engines.
4. Technical SEO: Ensuring that your website is technically sound and easily accessible to search engine crawlers. This includes optimizing site speed, mobile-friendliness, site architecture, and fixing any issues that could negatively impact search engine rankings.
5. Content Creation: Creating high-quality, relevant content that provides value to your audience and encourages engagement. This could include blog posts, articles, videos, infographics, and more.
6. Local SEO: Optimizing your website and online presence to improve visibility in local search results, particularly important for businesses targeting a local audience.
7. User Experience (UX): Providing a seamless and positive experience for visitors to your website, which can indirectly impact your search engine rankings.
8. Analytics and Monitoring: Tracking key metrics such as website traffic, rankings, and conversions to measure the effectiveness of your SEO efforts and make adjustments as needed.

Overall, SEO is an ongoing process that requires continuous monitoring, adaptation, and optimization to keep up with changes in search engine algorithms and user behavior.