Ad ROAS Improved to 220%! Interfactory Releases Case Study of EC Growth Support for Long-Established Confectionery Maker Nakajima Taishodo
Interfactory has released a case study where its EC support service "EBISU GROWTH" improved the advertising ROAS of long-established confectionery maker Nakajima Taishodo's online shop from 80% to 220%. The service provided hands-on support from strategy formulation to operational improvement, aiding sustainable EC growth and organizational self-sufficiency.
📋 Article Processing Timeline
- 📰 Published: April 30, 2026 at 20:10
- 🔍 Collected: April 30, 2026 at 11:31
- 🤖 AI Analyzed: April 30, 2026 at 20:32 (9h 0m after Collected)
Interfactory Inc. (Headquarters: Chiyoda-ku, Tokyo; President & CEO: Noboru Kaburagi; hereinafter "Interfactory") has released a case study of its EC support service "EBISU GROWTH" in supporting the "Nakajima Taishodo Online Shop" operated by Nakajima Taishodo Co., Ltd.
In supporting the online shop of Nakajima Taishodo, a long-established confectionery maker with over 100 years of history, the EC support service "EBISU GROWTH" improved advertising ROAS (Return on Advertising Spend) from 80% to 220%.
In response to the company's decision to "incorporate a professional perspective not available in-house," EBISU GROWTH provided hands-on support from strategy formulation to execution. We introduce our hands-on support initiative, where we face challenges from the same perspective as highly ambitious business owners and grow their businesses together.
View Case Study Article
About Nakajima Taishodo Co., Ltd.
Founded in 1912 (Taisho 1st year), Nakajima Taishodo is a long-established confectionery maker that has earnestly pursued "making sweets for the most important people" for over 100 years.
Currently, they operate three brands: "Hitotoe" for gifts, "DANKE" primarily for wholesale, and "Nakajima Taishodo" which utilizes rich ingredients from Tamba. Among these, "Hitotoe" and "Nakajima Taishodo" are focusing on online sales through their own EC sites and major EC malls, delivering their carefully crafted Japanese and Western sweets to customers nationwide. Additionally, "Nakajima Taishodo" operates physical stores mainly in the Kansai region, providing "deliciousness" and "colorful living" through various touchpoints.
Nakajima Taishodo Online Shop
https://www.nakajimataishodo-shop.jp/
Background and Challenges of EBISU GROWTH Implementation
Nakajima Taishodo decided to focus on its own EC site and EC malls to deliver its sweets to more customers. However, they faced several challenges in achieving their high sales targets.
Lack of Strategic Expertise
Despite high sales targets, there was a lack of in-house specialized personnel who could develop data-driven winning strategies, specifically "when, what, and in what order to execute."
Limited Operational Resources and Knowledge
Resources were limited for simultaneously executing various measures such as advertising operations, SEO, and UI/UX improvements within the site, preventing an effective PDCA cycle.
To resolve these challenges and achieve high goals, Interfactory's hands-on EC support service "EBISU GROWTH" was introduced as a partner. As a result of working together from strategy formulation to on-site operational improvement, a system for sustainable growth has been established.
Effects of EBISU GROWTH Implementation
Participation from Upstream Processes, Supporting Undecided Decision-Making
EBISU GROWTH participated from the strategy formulation stage for Nakajima Taishodo's future growth vision. By supporting upstream decisions like "what to prioritize" with a professional perspective, a system for steadily accumulating steps was built.
Creation of "Certain Results" through the Fusion of Specialized Know-how
EBISU GROWTH provided support in various specialized areas such as web advertising, SEO, and mall operations. Particularly in advertising operations, it expanded the scope of operations while increasing ROAS by approximately 2.7 times (80% to 220%), achieving visible results in a short period and strengthening the business's revenue base.
Contribution to Building a "Self-Driving" Organization
EBISU GROWTH is not merely a substitute for work. Through daily close communication and feedback, it emphasizes the transfer of knowledge to enable Nakajima Taishodo's staff to independently conceive and execute marketing measures, fostering "self-driving" capabilities.
A detailed report through interviews with the person in charge is introduced in the following article:
https://ebisumart.com/blog/nakajimataishodo/
About EC Support Service "EBISU GROWTH"
EBISU GROWTH is a hands-on DX/EC support service* that optimizes commerce by offering flexible proposals tailored to the customer's business phase. Professionals who have supported various industries, both B2C and B2B, from problem identification and strategic analysis to system integration/construction, sales promotion/marketing, and globalization, support DX/EC growth that is not "confined" to the EC framework.
*Also applicable to businesses using EC systems other than Interfactory's services "EBISUMART" and "EBISUMART Lite."
Based on its corporate philosophy, Interfactory aims to be a platform that is truly useful for EC businesses.
In supporting the online shop of Nakajima Taishodo, a long-established confectionery maker with over 100 years of history, the EC support service "EBISU GROWTH" improved advertising ROAS (Return on Advertising Spend) from 80% to 220%.
In response to the company's decision to "incorporate a professional perspective not available in-house," EBISU GROWTH provided hands-on support from strategy formulation to execution. We introduce our hands-on support initiative, where we face challenges from the same perspective as highly ambitious business owners and grow their businesses together.
View Case Study Article
About Nakajima Taishodo Co., Ltd.
Founded in 1912 (Taisho 1st year), Nakajima Taishodo is a long-established confectionery maker that has earnestly pursued "making sweets for the most important people" for over 100 years.
Currently, they operate three brands: "Hitotoe" for gifts, "DANKE" primarily for wholesale, and "Nakajima Taishodo" which utilizes rich ingredients from Tamba. Among these, "Hitotoe" and "Nakajima Taishodo" are focusing on online sales through their own EC sites and major EC malls, delivering their carefully crafted Japanese and Western sweets to customers nationwide. Additionally, "Nakajima Taishodo" operates physical stores mainly in the Kansai region, providing "deliciousness" and "colorful living" through various touchpoints.
Nakajima Taishodo Online Shop
https://www.nakajimataishodo-shop.jp/
Background and Challenges of EBISU GROWTH Implementation
Nakajima Taishodo decided to focus on its own EC site and EC malls to deliver its sweets to more customers. However, they faced several challenges in achieving their high sales targets.
Lack of Strategic Expertise
Despite high sales targets, there was a lack of in-house specialized personnel who could develop data-driven winning strategies, specifically "when, what, and in what order to execute."
Limited Operational Resources and Knowledge
Resources were limited for simultaneously executing various measures such as advertising operations, SEO, and UI/UX improvements within the site, preventing an effective PDCA cycle.
To resolve these challenges and achieve high goals, Interfactory's hands-on EC support service "EBISU GROWTH" was introduced as a partner. As a result of working together from strategy formulation to on-site operational improvement, a system for sustainable growth has been established.
Effects of EBISU GROWTH Implementation
Participation from Upstream Processes, Supporting Undecided Decision-Making
EBISU GROWTH participated from the strategy formulation stage for Nakajima Taishodo's future growth vision. By supporting upstream decisions like "what to prioritize" with a professional perspective, a system for steadily accumulating steps was built.
Creation of "Certain Results" through the Fusion of Specialized Know-how
EBISU GROWTH provided support in various specialized areas such as web advertising, SEO, and mall operations. Particularly in advertising operations, it expanded the scope of operations while increasing ROAS by approximately 2.7 times (80% to 220%), achieving visible results in a short period and strengthening the business's revenue base.
Contribution to Building a "Self-Driving" Organization
EBISU GROWTH is not merely a substitute for work. Through daily close communication and feedback, it emphasizes the transfer of knowledge to enable Nakajima Taishodo's staff to independently conceive and execute marketing measures, fostering "self-driving" capabilities.
A detailed report through interviews with the person in charge is introduced in the following article:
https://ebisumart.com/blog/nakajimataishodo/
About EC Support Service "EBISU GROWTH"
EBISU GROWTH is a hands-on DX/EC support service* that optimizes commerce by offering flexible proposals tailored to the customer's business phase. Professionals who have supported various industries, both B2C and B2B, from problem identification and strategic analysis to system integration/construction, sales promotion/marketing, and globalization, support DX/EC growth that is not "confined" to the EC framework.
*Also applicable to businesses using EC systems other than Interfactory's services "EBISUMART" and "EBISUMART Lite."
Based on its corporate philosophy, Interfactory aims to be a platform that is truly useful for EC businesses.