Ключевые слова: advocate, attracting, back, believer, business, buying, care, certain, coming, concept, conceptual, contact, customer relationship management, customer retention, devoted, entice, extend, holding, information, keep, learn, loyal, loyalty, management, marketing, modern, more, reliable, repeating, reputation, retaining, returning, sales, satisfaction, satisfy, secured, service, steadfast, strategy, valuable, welcoming,