Strategy Book 'ELG (Ecosystem-Led Growth)' Re-examining Business Growth Structure and Explaining ELG Strategy to be Reprinted
The strategy book 'ELG (Ecosystem-Led Growth)' has been decided for a reprint due to its significant popularity and sales success since its release on April 9, 2026.
📋 Article Processing Timeline
- 📰 Published: April 15, 2026 at 19:00
- 🔍 Collected: April 15, 2026 at 10:31
- 🤖 AI Analyzed: April 16, 2026 at 01:42 (15h 10m after Collected)
PartnerProp Co., Ltd. (Headquarters: Chiyoda-ku, Tokyo; Representative Director & CEO: Takumi Inoue; hereinafter: PartnerProp), a leading company in Japan providing PRM (Partner Relationship Management) systems to realize "partner marketing," announces that a reprint has been decided for the book "ELG (Ecosystem-Led Growth): Business Strategy for Next-Generation Marketing and Sales Organizations Growing with Partners/Agencies" (Publisher: Sendenkaigi Co., Ltd.), co-authored with Mr. Toshinari Umeki of Dentsu Inc. (Headquarters: Minato-ku, Tokyo; Representative Director & President Executive Officer: Chisato Matsumoto; hereinafter: Dentsu), who is also Co-Representative of Dentsu B2B Initiative.
Click here for book details
◾️Background of Reprint Decision
After its release on April 9, 2026, the book received significant attention, ranking No. 1 in Amazon's "Marketing & Sales" category on its release day and temporarily selling out on Amazon. It has garnered support from practitioners involved in partner business and agency strategies, as well as professionals in various fields such as marketing, sales, business development, and corporate planning in B2B businesses, leading to the decision for a reprint.
Against the backdrop of a declining working-age population, difficulties in recruiting sales personnel, and intensifying competition for customer acquisition, growth strategies for B2B companies are at a turning point. As the limitations of traditional models that aim for growth solely through in-house direct sales organizations become apparent, there is increasing attention on growth models that collaborate with partner companies, agencies, and alliance partners to deliver customer value beyond corporate boundaries. However, in Japan, such initiatives are often still viewed as extensions of "agency management" or "distribution channel optimization," and practical knowledge organized as a core strategy for business growth has been limited. This book was published as a practical guide that systematically organizes the "ELG (Ecosystem-Led Growth)" strategy from the perspectives of its background, structure, process, organization, and operation, based on this context.
◾️Features of This Book
This book is a practical guide that explains all processes for advancing an ecosystem strategy. After organizing the historical context in which the ELG strategy is gaining attention, the book, based on the authors' experiences, unveils for the first time the "ELG MODEL," a process model crucial for advancing the ELG strategy. It also specifically explains the measures necessary to implement ELG strategies such as partner marketing and PRM, making it full of immediately actionable knowledge.
This is an essential book not only for those struggling with partner business or agency utilization but also for all business professionals involved in strategy, marketing, and sales in B2B businesses.
■Book Overview
Title: "ELG (Ecosystem-Led Growth): Business Strategy for Next-Generation Marketing and Sales Organizations Growing with Partners/Agencies"
Authors: Toshinari Umeki (Dentsu Inc.), Takumi Inoue (PartnerProp Co., Ltd.)
Writing Cooperation: Yudai Asai (PartnerProp Co., Ltd.)
Publisher: Sendenkaigi Co., Ltd.
Release Date: April 9, 2026
Format: Hardcover / E-book
Click here for book details
■Author Profiles
Toshinari Umeki
Marketing Consultant, B2B Marketing Consulting Department, 8th Marketing Bureau, Dentsu Inc.; Co-Representative, Dentsu B2B Initiative. After working at a comprehensive human resources company, Cyber Communications Inc., and Dentsu West Japan Inc., he joined Dentsu Inc. in 2018. He has been responsible for GTM strategy consulting for over 400 domestic and international B2B businesses, including manufacturers of materials, semiconductors, industrial robots, and business PCs, as well as SaaS products such as HR, accounting, and security software. He is the Co-Representative of the "Dentsu B2B Initiative," a cross-organizational body spanning 18 Dentsu Group companies.
Takumi Inoue
Representative Director, PartnerProp Co., Ltd. At Recruit Co., Ltd.'s SaaS business, he was responsible for the alliance strategy design and promotion of the Air series, including "AirPay," expanding monthly orders from dozens to thousands. Subsequently, he gained experience launching new businesses as a product manager at the same company. Currently, he founded PartnerProp Co., Ltd., which provides PRM tools that scientifically approach partner business. He supports partner businesses for a wide range of companies, from startups to large enterprises, and leads the systematization of the ELG MODEL and partner marketing.
■About PartnerProp Co., Ltd.
PartnerProp Co., Ltd. is a startup company that enables the updating of "partner channels" with the mission of "making co-creation the engine of society." We aim to lead the PRM (Partner Relationship Management) domain, which has become a huge global market worth 38 trillion yen, and realize a society that promotes co-creation between companies as a leading company representing Japan.
What is PRM "PartnerProp" for realizing partner marketing?
To enable all companies to realize partner marketing, we develop and provide "PartnerProp," a PRM (Partner Relationship Management) system. In previous partner channels, it was difficult to "visualize" partner activities and "create mechanisms" for sales promotion with partners due to the cross-company nature of the channels.
By utilizing our PRM tool "PartnerProp," we solve these challenges and achieve expanded results in partner channels, leading to corporate growth. It is already widely used by various companies, from enterprise companies to startups, and has received a Leader rating in the PRM category on "IT review," one of Japan's largest review sites.
https://www.itreview.jp/products/partnerprop/reviews
■'PartnerProp' Service Page: https://partner-prop.com/
■'What is Partner Marketing?': https://partner-prop.com/partner-marketing/
Company Name: PartnerProp Co., Ltd.
Business Activities: Planning, development, and sales of the PRM tool "PartnerProp"
Established: May 2023
Representative: Representative Director & CEO Takumi Inoue
Location: MIDORI.so 3F, 2-5-3 Hirakawacho, Chiyoda-ku, Tokyo
Official HP: https://partner-prop.com/
Click here for book details
◾️Background of Reprint Decision
After its release on April 9, 2026, the book received significant attention, ranking No. 1 in Amazon's "Marketing & Sales" category on its release day and temporarily selling out on Amazon. It has garnered support from practitioners involved in partner business and agency strategies, as well as professionals in various fields such as marketing, sales, business development, and corporate planning in B2B businesses, leading to the decision for a reprint.
Against the backdrop of a declining working-age population, difficulties in recruiting sales personnel, and intensifying competition for customer acquisition, growth strategies for B2B companies are at a turning point. As the limitations of traditional models that aim for growth solely through in-house direct sales organizations become apparent, there is increasing attention on growth models that collaborate with partner companies, agencies, and alliance partners to deliver customer value beyond corporate boundaries. However, in Japan, such initiatives are often still viewed as extensions of "agency management" or "distribution channel optimization," and practical knowledge organized as a core strategy for business growth has been limited. This book was published as a practical guide that systematically organizes the "ELG (Ecosystem-Led Growth)" strategy from the perspectives of its background, structure, process, organization, and operation, based on this context.
◾️Features of This Book
This book is a practical guide that explains all processes for advancing an ecosystem strategy. After organizing the historical context in which the ELG strategy is gaining attention, the book, based on the authors' experiences, unveils for the first time the "ELG MODEL," a process model crucial for advancing the ELG strategy. It also specifically explains the measures necessary to implement ELG strategies such as partner marketing and PRM, making it full of immediately actionable knowledge.
This is an essential book not only for those struggling with partner business or agency utilization but also for all business professionals involved in strategy, marketing, and sales in B2B businesses.
■Book Overview
Title: "ELG (Ecosystem-Led Growth): Business Strategy for Next-Generation Marketing and Sales Organizations Growing with Partners/Agencies"
Authors: Toshinari Umeki (Dentsu Inc.), Takumi Inoue (PartnerProp Co., Ltd.)
Writing Cooperation: Yudai Asai (PartnerProp Co., Ltd.)
Publisher: Sendenkaigi Co., Ltd.
Release Date: April 9, 2026
Format: Hardcover / E-book
Click here for book details
■Author Profiles
Toshinari Umeki
Marketing Consultant, B2B Marketing Consulting Department, 8th Marketing Bureau, Dentsu Inc.; Co-Representative, Dentsu B2B Initiative. After working at a comprehensive human resources company, Cyber Communications Inc., and Dentsu West Japan Inc., he joined Dentsu Inc. in 2018. He has been responsible for GTM strategy consulting for over 400 domestic and international B2B businesses, including manufacturers of materials, semiconductors, industrial robots, and business PCs, as well as SaaS products such as HR, accounting, and security software. He is the Co-Representative of the "Dentsu B2B Initiative," a cross-organizational body spanning 18 Dentsu Group companies.
Takumi Inoue
Representative Director, PartnerProp Co., Ltd. At Recruit Co., Ltd.'s SaaS business, he was responsible for the alliance strategy design and promotion of the Air series, including "AirPay," expanding monthly orders from dozens to thousands. Subsequently, he gained experience launching new businesses as a product manager at the same company. Currently, he founded PartnerProp Co., Ltd., which provides PRM tools that scientifically approach partner business. He supports partner businesses for a wide range of companies, from startups to large enterprises, and leads the systematization of the ELG MODEL and partner marketing.
■About PartnerProp Co., Ltd.
PartnerProp Co., Ltd. is a startup company that enables the updating of "partner channels" with the mission of "making co-creation the engine of society." We aim to lead the PRM (Partner Relationship Management) domain, which has become a huge global market worth 38 trillion yen, and realize a society that promotes co-creation between companies as a leading company representing Japan.
What is PRM "PartnerProp" for realizing partner marketing?
To enable all companies to realize partner marketing, we develop and provide "PartnerProp," a PRM (Partner Relationship Management) system. In previous partner channels, it was difficult to "visualize" partner activities and "create mechanisms" for sales promotion with partners due to the cross-company nature of the channels.
By utilizing our PRM tool "PartnerProp," we solve these challenges and achieve expanded results in partner channels, leading to corporate growth. It is already widely used by various companies, from enterprise companies to startups, and has received a Leader rating in the PRM category on "IT review," one of Japan's largest review sites.
https://www.itreview.jp/products/partnerprop/reviews
■'PartnerProp' Service Page: https://partner-prop.com/
■'What is Partner Marketing?': https://partner-prop.com/partner-marketing/
Company Name: PartnerProp Co., Ltd.
Business Activities: Planning, development, and sales of the PRM tool "PartnerProp"
Established: May 2023
Representative: Representative Director & CEO Takumi Inoue
Location: MIDORI.so 3F, 2-5-3 Hirakawacho, Chiyoda-ku, Tokyo
Official HP: https://partner-prop.com/