Seigo Tomatsu, Integrated Marketing Director of NTT Docomo Business, Joins the Advisory Board of the 'BtoB Marketing Study Group' Operated by Sairu

Sairu Inc., which operates the 'BtoB Marketing Study Group', a membership-based study group gathering BtoB marketing executives and practitioners from large and mid-sized companies, announced that Seigo Tomatsu, General Manager of the Integrated Marketing Department at NTT Docomo Business Inc., has assumed the position of Advisory Board Member for the group.

Mr. Tomatsu has extensive practical experience across all aspects of BtoB marketing, including ABM, digital marketing, inside sales, and customer success. By sharing his knowledge within this study group, we will provide even further value to our member companies.

BtoB Marketing Study Group Website: https://sairu.co.jp/service/research/btobmarketing/

Background and Purpose of the Appointment In BtoB marketing at large and mid-sized companies, judgments and decision-making across diverse themes—such as role division with business departments, alignment with sales, and the construction and operation of data infrastructure—are required. However, the information that holds the answers cannot be easily found even if you consult marketing textbooks, web searches, or AI. The current reality is that many companies face the same challenges while individually repeating a process of trial and error.

The BtoB Marketing Study Group will launch in April 2026 as a venue to share practical knowledge and case studies in a closed environment to solve these challenges.

By welcoming Mr. Tomatsu, who oversees overall BtoB marketing at NTT Docomo Business, to the advisory board, we will utilize his massive-scale BtoB marketing practical knowledge in the telecommunications and digital services sectors for the study group's activities, thereby providing value to our member companies.

Profile of Mr. Tomatsu NTT Docomo Business Inc. Integrated Marketing Department General Manager Seigo Tomatsu

General Manager of the Integrated Marketing Department at NTT Docomo Business Inc. He oversees overall BtoB marketing, including ABM programs, digital marketing, inside sales, customer success, sales enablement, and member community management.