Ключевые слова: abstract, advertising, alphabet, analysing, background, benefit, big data, calculate, colorful, concept, connection, cyberspace, database, development, digital marketing, education, engine, index, indexing, information, isolated, letter, letters, links, marketing, optimisation, optimization, process, programming, promoted, rank, ranking, research, results, search, search engine optimization, search engines optimization, searching, seo, service, signs, solution, strategy, success, technology, text, traffic, website, white, word,