Elena  Rolbina, 
    Sequential Method of Client Portfolio Optimization,
    Journal of Engineering and Applied Sciences,
    Volume 12,Issue 19,
    2017,
    Pages 4985-4989,
    ISSN 1816-949x,
    jeasci.2017.4985.4989,
    (https://makhillpublications.co/view-article.php?doi=jeasci.2017.4985.4989)
    Abstract: The study proposes a technique to optimize work with clients in order to create a client-oriented
business through the use of analytical marketing methods. The following tools are proposed to optimize the
customer portfolio: ABC analysis of consumer purchases and producer’s profits as the, study of the client life
cycle in terms of purchases and profits; modified BKG matrices of customer purchases and profits. To develop
a customer interaction strategy based on the results of the proposed algorithm, the researcher developed a
matrix for client base consolidated analysis.
    Keywords: Client-oriented business;ABC analysis;client life cycle;portfolio methods;BKG;marketing methods