35 Marketing services for B2B (business-to-business) customer, namely, providing advocacy and customer recommendations automation, customer retention and engagement marketing, customer marketing campaigns management, for increasing customer loyalty, sales, lead generation; customer relationship management in the field of B2B (business-to-business); organization, operation and supervision of loyalty and incentive schemes for B2B (business-to-business) clients, for managing and increasing advocacy and client referrals, reviews and references, customer loyalty, sales, and leads generation; providing user reviews for commercial or advertising purposes