Search engine optimization is an interdisciplinary field of study and a methodological approach concerned with understanding and influencing the visibility of online content within search engine results pages (SERPs). It investigates the complex interactions between search engine algorithms, user search queries, and the technical, structural, and content-based characteristics of digital assets, aiming to enhance their ranking and discoverability. Key characteristics include the analysis of ranking factors, the implementation of on-page and off-page strategies, and adaptation to evolving algorithmic models, making it significant for information retrieval, digital marketing, and the broader landscape of web science by facilitating access to digital information.