SEO involves optimizing websites to promote them in search engine results. It requires on-page optimization like improving website visibility and appearance. It also requires off-page optimization like getting links from other sites without the visitor knowing. SEO is an evolving process that uses algorithms and requires constant updates to strategies. It takes patience as results may not be immediate. Analytics help analyze websites and keywords are a vital factor search engines consider, along with proper internal and external linking. Using social media can help gain more traffic.