Sakura Internet and J-Stream Launch Collaboration to Strengthen Domestic Content Delivery Infrastructure
Sakura Internet and J-Stream are collaborating to build a joint domestic content delivery platform. They will install J-Stream's CDNext edge servers within Sakura's secure cloud environment, aiming for cost efficiency and high availability.
📋 Article Processing Timeline
- 📰 Published: April 16, 2026 at 00:30
- 🔍 Collected: April 15, 2026 at 16:01
- 🤖 AI Analyzed: April 19, 2026 at 12:18 (92h 16m after Collected)
Sakura Internet Inc. (TSE Prime: 3778, Headquarters: Osaka City, Osaka Prefecture, President and CEO: Kunihiro Tanaka, hereinafter 'Sakura Internet') and J-Stream Inc. (TSE Growth: 4308, Headquarters: Minato-ku, Tokyo, President and CEO: Toshio Ishimatsu, hereinafter 'J-Stream') will begin a collaboration to strengthen the foundation for domestic content delivery starting Wednesday, April 15, 2026.
Through this initiative, both companies will begin building a joint delivery platform that enables stable delivery even during large-scale access, under the highly secure environment of Sakura Internet, which has been selected as a 'FY2026 Government Cloud Service Provider'[1]. As a collaboration between two domestic operators that have supported the domestic content delivery infrastructure since the dawn of the internet in Japan, we will promote the realization of a delivery infrastructure with even higher safety and availability.
[1] The public cloud 'Sakura Cloud' provided by Sakura Internet was selected as a target service in the 'Provision of Cloud Services for Government Cloud Development at the Digital Agency - FY2026 Call for Applications' openly recruited by the Digital Agency.
■ Background of the Collaboration
Internet traffic in Japan is continuously increasing, and estimates have been announced that it will reach approximately 14 times the 2020 level by 2030 [2]. Content delivery is expanding beyond entertainment to a wide range of areas including business, education, and administration, making the importance of a high-quality, stable delivery infrastructure greater than ever.
While the CDN/delivery infrastructure market in Japan is also expected to see a compound annual growth rate of over 16% from 2025 to 2035 [3], the international balance of payments in the digital sector reached a deficit of approximately 6.7 trillion yen in 2024 [4].
We recognize that strengthening the domestic delivery infrastructure is an urgent social issue, also from the perspective of the anticipated spread of broadband alternatives in IT simulcasting [5] and security concerns regarding information delivery by government agencies.
Given the market environment and social background described above, both companies shared the recognition that it is essential for domestic operators to strengthen the delivery infrastructure and build a system capable of long-term stable operation, leading to this collaboration.
[2] Mitsubishi Research Institute, 'Proposing measures to establish a new information and telecommunications infrastructure to support the information explosion' (September 28, 2023), https://www.mri.co.jp/
[3] Future Market Insights, Inc., 'Japan Content Delivery Network (CDN) Industry Size, Share, and Forecast Outlook 2025 to 2035' (June 6, 2025), https://www.futuremarketinsights.com/reports/content-delivery-network-industry-analysis-in-japan
[4] Ministry of Internal Affairs and Communications, '2025 White Paper on Information and Communications' https://www.soumu.go.jp/johotsusintokei/whitepaper/ja/r07/pdf/index.html
[5] A system that simultaneously distributes the same content as TV/radio broadcasting over IP networks such as the Internet.
■ Overview of the Collaboration
As the first step, we aim to install and begin operating edge servers for J-Stream's CDN service 'J-Stream CDNext' within Sakura Internet's network. This will provide the following value:
1. Improvement of cost efficiency and flexibility through a joint delivery platform
- Both companies will mutually disclose system information regarding CDN edge facilities and proceed with the standardization of facilities and systems. This will optimize infrastructure investment and aim to improve future scalability and maintainability. User companies will be able to accommodate future increases in delivery volume and service expansion without increasing their own burden.
2. One-stop access to storage/cloud and CDN
- We will build a joint delivery platform that links Sakura Internet's 'Sakura Cloud' and J-Stream's 'CDNext', enabling user companies to utilize everything from hosting to delivery in a one-stop manner.
In addition, we will explore the possibility of joint development of an API that allows for mutual operation of services from the respective service management screens of both companies in the future.
3. High security and availability
- As the first domestic provider...
Through this initiative, both companies will begin building a joint delivery platform that enables stable delivery even during large-scale access, under the highly secure environment of Sakura Internet, which has been selected as a 'FY2026 Government Cloud Service Provider'[1]. As a collaboration between two domestic operators that have supported the domestic content delivery infrastructure since the dawn of the internet in Japan, we will promote the realization of a delivery infrastructure with even higher safety and availability.
[1] The public cloud 'Sakura Cloud' provided by Sakura Internet was selected as a target service in the 'Provision of Cloud Services for Government Cloud Development at the Digital Agency - FY2026 Call for Applications' openly recruited by the Digital Agency.
■ Background of the Collaboration
Internet traffic in Japan is continuously increasing, and estimates have been announced that it will reach approximately 14 times the 2020 level by 2030 [2]. Content delivery is expanding beyond entertainment to a wide range of areas including business, education, and administration, making the importance of a high-quality, stable delivery infrastructure greater than ever.
While the CDN/delivery infrastructure market in Japan is also expected to see a compound annual growth rate of over 16% from 2025 to 2035 [3], the international balance of payments in the digital sector reached a deficit of approximately 6.7 trillion yen in 2024 [4].
We recognize that strengthening the domestic delivery infrastructure is an urgent social issue, also from the perspective of the anticipated spread of broadband alternatives in IT simulcasting [5] and security concerns regarding information delivery by government agencies.
Given the market environment and social background described above, both companies shared the recognition that it is essential for domestic operators to strengthen the delivery infrastructure and build a system capable of long-term stable operation, leading to this collaboration.
[2] Mitsubishi Research Institute, 'Proposing measures to establish a new information and telecommunications infrastructure to support the information explosion' (September 28, 2023), https://www.mri.co.jp/
[3] Future Market Insights, Inc., 'Japan Content Delivery Network (CDN) Industry Size, Share, and Forecast Outlook 2025 to 2035' (June 6, 2025), https://www.futuremarketinsights.com/reports/content-delivery-network-industry-analysis-in-japan
[4] Ministry of Internal Affairs and Communications, '2025 White Paper on Information and Communications' https://www.soumu.go.jp/johotsusintokei/whitepaper/ja/r07/pdf/index.html
[5] A system that simultaneously distributes the same content as TV/radio broadcasting over IP networks such as the Internet.
■ Overview of the Collaboration
As the first step, we aim to install and begin operating edge servers for J-Stream's CDN service 'J-Stream CDNext' within Sakura Internet's network. This will provide the following value:
1. Improvement of cost efficiency and flexibility through a joint delivery platform
- Both companies will mutually disclose system information regarding CDN edge facilities and proceed with the standardization of facilities and systems. This will optimize infrastructure investment and aim to improve future scalability and maintainability. User companies will be able to accommodate future increases in delivery volume and service expansion without increasing their own burden.
2. One-stop access to storage/cloud and CDN
- We will build a joint delivery platform that links Sakura Internet's 'Sakura Cloud' and J-Stream's 'CDNext', enabling user companies to utilize everything from hosting to delivery in a one-stop manner.
In addition, we will explore the possibility of joint development of an API that allows for mutual operation of services from the respective service management screens of both companies in the future.
3. High security and availability
- As the first domestic provider...