  In a two-sided marketplace, network effects are crucial for competitiveness,
and platforms need to retain users through advanced customer relationship
management as much as possible. Maintaining numerous providers' stable and
active presence on the platform is highly important to enhance the
marketplace's scale and diversity. The strongest motivation for providers to
continue using the platform is to realize actual profits through sales. Then,
we propose a personalized promotion to increase the number of successful
providers with sales experiences on the platform. The main contributions of our
research are twofold. First, we introduce a new perspective in provider
management with the distribution of successful sales experiences. Second, we
propose a personalized promotion optimization method to maximize the number of
providers' sales experiences. By utilizing this approach, we ensure equal
opportunities for providers to experience sales without being monopolized by a
few providers. Through experiments using actual data on coupon distribution, we
confirm that our method enables the implementation of coupon allocation
strategies that significantly increase the total number of providers having
sales experiences.
