Cloud Native Community Japan – Let’s meet CNCF Ambassadors
Wednesday, December 10
Time: 18:00 – 21:00
Location: Toranomon Hills Forum, 4th floor, Hall B1
Registration Cost: Complimentary
Approximately 300 CNCF Ambassadors have been appointed by the CNCF worldwide, promoting cloud native in their respective regions. This time, Japanese CNCF Ambassadors will speak about the appeal of the CNCF Ambassador role, which connects Japan with the world. We will also invite Christoph Blecker, Chair of the CNCF Governing Board, to deliver the keynote speech, where he will discuss the importance of upstream activities and his expectations for Japanese CNCF Ambassadors.
There will also be time for networking, so you can speak directly with the CNCF Ambassadors!
Registration:
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After logging in, click “RSVP” on this page to register.
Event organizers:
Yuichi Nakamura (Linux Foundation Japan Evangelist), Shu Muto (NEC Solution Innovators, Ltd.), Kenta Tada (Toyota Motor Corporation), Kenji Tagashira (Fsas Technologies Inc.)
Agenda:
OpenSearchCon Japan 2025
Thursday, December 11
Location: Vision Center Tokyo Toranomon
Registration Cost: $25 USD
OpenSearchCon Japan is a one-day, in-person event designed to bring the OpenSearch community together—right to you. Whether you’re a user, administrator, or developer, the roadshow offers a focused opportunity to learn from real-world use cases, connect with local peers, and collaborate with experts. Join us to explore the latest in search, observability, and security applications, all in a single, impactful day.
Rust Global: Tokyo
Monday, December 8
Time: 18:30 – 20:30 JST
Location: Toranomon Hills Forum
Registration Cost: $30 USD

Join the Rust Foundation at Rust Global: Tokyo for an evening of impactful conversations about how the Rust programming language is being used in production around the world. Expect insightful talks from professional teams invested in Rust, inspiring Rust adoption stories, and valuable networking opportunities with other open source leaders in Tokyo!
How to Register: Pre-registration is required. To register for Rust Global: Tokyo, add it to your Open Source Summit Japan registration.
Not attending Open Source Summit Japan? Register for Rust Global: Tokyo separately using the button below.