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Green IO Paris
Building European Green IT
Green IO is where Tech leaders join forces to overcome unprecedented sustainability challenges in IT. With the explosive adoption of generative AI, governmental pushbacks against climate policies and...
December 9 to 11, 2025
CNIT Forest - La Défense
40+
speakers
800+
Attendees
20
countries
Agenda
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Day 1: Workshop Day
Tuesday 9th December 2025
10:50 to 11:1511:20 to 11:45WorkshopTitle TBA
In collaboration with
11:50 to 12:15WorkshopICT & cloud footprint data at scale: an API for digital sustainability through LCA
This workshop introduces participants to Resilio DB an industry-leading footprint database forLife Cycle Assessment (LCA) of digital product & services. Designed to overcome the challenges ofperforming LCAs at scale Resilio DB API provides reliable & easy to use consistent footprint data for the ICT sector. Participants will first explore the web UI before gaining hands-on experience with the REST APIendpoints through a guided Postman collection. You'll learn how to leverage Resilio DB tosearch and assess various digital devices from servers/VMs to end-user devices or customconfigurations.In collaboration with
12:20 to 12:4512:50 to 14:00Lunch Break & Networking | Nicolas Delay's art exhibition
14:00 to 14:25WorkshopTitle TBA
In collaboration with
14:30 to 14:55WorkshopSee moreBooking a flight: how AI agents make GHG emissions even worst
In collaboration with
15:00 to 15:25WorkshopSee moreBridge the Transparency Gap: Evaluating LLMs Footprint with EcoLogits
In collaboration with
15:30 to 15:55WorkshopCommunity sponsors' pitiching time
In collaboration with
16:00 to 16:30Coffee Break & Networking | Nicolas Delay's art exhibition
16:30 to 16:55WorkshopSee moreUsing carbon.txt to boost transparency inside your company
In collaboration with
17:00 to 17:25WorkshopSee moreDiscover the Eroom framework
How could we massively reduce the environmental footprint of digital technology ? By analogy with Moore’s law, we propose a new framework : Eroom. The goal of Eroom is to help IT professionals to optimize their information system and applications by identifying the main opportunities and acting on them. And guess what : we’ve built tools for that, and they are open source ! Join us to discover the Eroom’s framework and how to apply it in your context
Lydie Huon Boavizta | Yeita
Morgane Eckert Boavizta | WeScale
Raphaël Lemaire Bovizta | Zenika
Samia Kherrati Boavizta | WeScale
Tristan Nitot Boavizta | OCTO TechnologyIn collaboration with
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Day 2: Green IT from the trenches ... and still winning!
Wednesday 10th December 2025
09:40 to 09:50OPENING REMARKSSee moreA step after the other, the right pace in sustainability facing headwinds
09:50 to 10:20KeynoteSee moreTitle TBA
10:20 to 10:50Coffee Break & Networking | Nicolas Delay's art exhibition
10:50 to 11:15TalkSee moreEnvironmental impact of AI servers worldwide over a year (exclusive updates)
11:20 to 11:30NEWSSee moreQuick industry announcements in IT Sustainability
11:30 to 12:50Sustainable Digital ChallengeSee moreFinal Pitches for the Sustainable Digital Challenge!
Right from the trenches teams will pitch their achievement in reducing the environmental footprint of their Tech stack. For the AI challenge the contenders are: SNCF, BPI, Groupama and AXA. For the web challenge the contenders are INSEE, Younited, Botify.com, and Enedis.
AXA team AXA
Bibliothèque publique d'information team Bibliothèque publique d'information
Botify team Botify
Enedis team Enedis
Groupama team Groupama
Groupe SNCF team Groupe SNCF
Insee team Insee
Younited team YounitedIn collaboration with
12:50 to 14:00Lunch Break & Networking | Nicolas Delay's art exhibition
BOOK SIGNINGSee moreBook Signing "Géopolitique du numérique"
14:00 to 14:2514:30 to 14:55TalkSee moreHow Amadeus is leveraging & contributing to open-source to minimize its IT footprint
Amadeus is the world leader of IT solutions for the tourism industry. Our applications handle 10 billion transactions per day thanks to hundred of thousands of CPUs, and Terabytes of memory. How can you estimate carbon emissions of 250+ applications in a harmonized way and put 10k engineers into action to minimize our environmental impact? We will present you how we are building GSF’s “Impact Framework at scale” to implement the Amadeus Carbon Measurement Engine. Once stabilized, we will open source it and hopefully have it included in the Awesome Green Software!15:00 to 15:55Sustainable Digital Challenge JurySustainable Digital Challenge: Award Ceremony
In collaboration with
16:00 to 16:30Coffee Break & Networking | Nicolas Delay's art exhibition
16:30 to 16:55TalkSee moreCarbon accounting at scale to guide path towards low-carbon IT infrastructures
Credit Agricole Group Infrastructure Platform achievements and lessons learned during a transformative journey designing, building and deploying our GHG reporting & accounting information system to provide reliable assessments of ICT footprint to the business entities of Crédit Agricole and to our teams to work both on sufficiency and eco-efficiency to foster low-carbon IT transformation.17:00 to 17:25TalkSee moreThe invisible cloud: solving the Kubernetes carbon mystery
Kubernetes has a dirty secret: its power -abstraction, dynamic scheduling- makes its carbon footprint vanish. How do you solve a crime with an invisible culprit? Become a cloud detective! Using tools like Kepler and KEIT, we'll uncover energy waste, expose overprovisioning, and plot a course for a leaner cluster. Leave with a practical playbook to reduce your cloud emissions.17:30 to 17:5518:15 to 20:00Green IO x Tast’IT Apéro
In collaboration with
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Day 3: AI footprint from all angles
Thursday 11th December 2025
09:30 to 09:5510:00 to 10:55KeynoteSee moreHot takes, cool planet: debating AI sustainability
11:00 to 11:30Coffee Break & Networking | Nicolas Delay's art exhibition
11:30 to 11:55TalkSee moreIs carbon-aware computing such a good idea?
12:00 to 12:25TalkSee moreBeyond PUE – why datacenter efficiency is all about IT
As datacenter energy use and emissions continue to rise sharply, relying on isolated metrics like PUE alone no longer reflects true sustainability. This session challenges conventional assumptions by exploring why meaningful progress requires a full-stack perspective – one that integrates IT efficiency, but also waste heat recycling, and carbon impact. Participants will gain insights into how measurable performance, rather than promises or partial indicators, can drive real improvement in digital infrastructure sustainability.12:30 to 12:55TalkSee moreAnalysing IT Hardware performance for circularity
IT hardware is a significant investment for companies in both money and environmental impact. In the data centre IT accounts for up to 85% of the total energy draw and requires considerable amounts of carbon, critical raw materials and water to produce. Profiling, benchmarking and understanding IT performance is crucial for making the best decisions on what to buy, how to use it and when to replace or change. This talk will provide a complete understanding of how to use performance metrics such as ITEEsv to make data led decisions on IT projects and will demonstrate how IT performance has evolved over time and how use impacts performance.13:00 to 13:25Panel Discussion15 NGOs share views on Tech sustainability in Europe and potential areas of collaboration
In collaboration with
13:30 to 14:40Lunch Break & Networking | Nicolas Delay's art exhibition
14:40 to 15:05Panel DiscussionSee moreHow to measure the environmental footprint of AI?
15:10 to 15:35TalkSee moreImposing AI: Deceptive design patterns against sustainability
Generative AI is being massively deployed in digital services, at a scale that will result in significant environmental harm. We document how tech companies are transforming established user interfaces to impose AI use and show how and to what extent these strategies fit within established deceptive pattern categories. We identify two main design strategies that are implemented to impose AI use in both personal and professional contexts: imposing AI features in interfaces at the expense of existing non-AI features and promoting narratives about AI that make it harder to resist using it.15:40 to 16:05TalkSee moreWe need to talk about AI, sustainable AI
Since November 2022, we’ve heard a lot about Generative AI and how powerful this tool is and will be. But with great power comes great responsibility (and often, great environmental costs). In fact, it’s estimated that AI alone could account for 14% of total global emissions by 2040, while its water usage may hit 6.6 billion cubic meters by 2027. However, sustainability is not just about the environment: it's also about people, ethics and transparency. We will explore some of the current issues surrounding such powerful tools in order to pave the way for true innovation.16:10 to 16:35TalkSee moreMore than carbon: the full environmental footprint of AI
The rapid expansion of AI has intensified concerns about its environmental sustainability, yet current assessments predominantly focus on operational carbon emissions. Our study presents the first comprehensive multi-criteria lifecycle assessment of AI training, examining 16 environmental impact categories through primary data collection and elemental analysis of the Nvidia A100 GPU. Carbon-only accounting fundamentally misrepresents AI's globally distributed impact profile, creating a dangerous blind spot in the sustainability discourse. Sustainable AI development demands fundamental changes in how we assess, communicate, and govern AI's environmental impacts.16:35 to 17:00TalkSee moreLimits to the evidence on AI’s climate benefits and their implications
What evidence supports AI’s positive impact on the environment? Since 2018, several reports have explored AI’s potential, but their findings are contested in academic and policy debates. The first part of this presentation reviews the different forms of evidence available, which comes mainly from expert surveys, economic models, and catalogues of use cases - mostly focused on machine learning rather than generative AI. The second part of the presentation examines the implications: weak accountability mechanisms make such evidence unreliable and hinder efforts to assess impacts at scale.
Meet the speakers
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More panelist soon
Panel DiscussionHow to measure the environmental footprint of AI?
... and more to come!
Meet our partners
Members of the Paris Green IT ecosystem as well as our corporate partners will be available to exchange with you on how to accelerate your digital sustainability journey.
Global Premium
Global Champion
CHAMPION
Community
Non Profit
Why they attended our past Paris editions
“Sustainability is one of the most important subjects facing technology companies today. The Green IO conference is without doubt one of the best places to learn about industry best practices, to exchange ideas and to discuss with others facing similar challenges.”
Diarmuid GILL, CTO (Criteo)“The Green IO conference in Paris this year was highly appreciated for its practical approaches to digital sustainability, grounded in the real-life experiences and shared insights of development teams and architects.”
Maija Fournier, Platform Architect (OECD)“It was a pleasure to participate in the Green IO 2023 forum! In the very technophile setting of the API Days, a great day of acculturation on the climate issues of digital activity. Top-notch speakers to raise awareness, engage the dynamics of eco-responsibility and illustrate concrete initiatives from players in digital, travel or industry. Positive challenge!”
Cyril Casenave, Head Of API & Digital Assets (Club Med)
“The blossoming of tools and initiatives in greening IT is a heart-warming signal from the digital sector. More than ever sharing experience and insights is pivotal for actors to ramp-up their effort.”
Gaël Duez
Green IO Founder
About Apidays
Apidays is the world's leading series of API conference. In today’s intricate digital landscape, APIs have emerged as powerful conduits for innovation, bridging the gaps and unlocking new realms of possibility.
December 9 to 11, 2025
CNIT Forest - La Défense