Ключевые слова: abstract, account, accounting, analysis, business, challenge, client, cluster, collect, communication, concept, consumer, control, crm, customer, data, database, development, digital, efficiency, experience, flat, illustration, information, interaction, interface, internet, management, market, marketing, media, modern, online, optimization, organization, product, relationship, scheme, server, service, software, solution, statistics, strategy, support, system, task, technology, user, work,