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The Most Significant
Apache CloudStack™ Event
The CloudStack Collaboration Conference is an exciting in-person event tailored for the global Apache CloudStack™ community, bringing together developers, users, and technology leaders to explore the latest advancements in open-source cloud and virtualization management.

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In-person access to sessions and workshops
Welcome bag with swags
Hackathon access
Exhibitors area access
On-site catering
Access to networking events
Official event t-shirt
Accommodation and Visa Information
#CSCollab2025 will be taking place in Milan, Italy, at the Enterprise Hotel
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The event team has curated a range of accommodation options to suit various budgets. Additionally, you’ll find travel suggestions and tips for visiting Milan.
The event team has curated a range of accommodation options to suit various budgets. Additionally, you’ll find travel suggestions and tips for visiting Milan.
#CSCollab2024 Sponsors
Showcase your brand to a global audience of cloud and virtualization professionals at the CloudStack Collaboration Conference. Sponsorship offers a unique opportunity to connect with developers, IT leaders, and decision-makers from Fortune 500 companies, driving innovation in open-source cloud computing. Gain visibility, network with industry experts, and position your company as a key player in the Apache CloudStack™ ecosystem.
Why Sponsor?
Sponsoring the CloudStack Collaboration Conference opens the door to new business opportunities and strategic partnerships. It’s a chance to demonstrate your commitment to the Apache CloudStack community and support the advancement of the open-source cloud orchestration platform.
Download the sponsorship prospectus to learn more!
Featured #CSCollab2024 Speakers
Time
Name
Speaker
Agenda
12:00 - 17:30
Hackathon
Join us for the CloudStack Collaboration Conference Hackathon on Day 1, where innovation, creativity, and collaboration come together! This event invites developers, cloud architects, system admins, and open-source enthusiasts to team up and solve real-world challenges in the cloud ecosystem using Apache CloudStack. Whether you’re a seasoned pro or new to the cloud community, this hackathon is your opportunity to dive into cutting-edge technologies, exchange ideas with fellow contributors, and push the boundaries of cloud computing.
During the hackathon, participants will work on exciting projects ranging from improving CloudStack features, developing new plugins, or tackling specific cloud-related problems. Expert mentors and CloudStack maintainers will be available to provide guidance and support, ensuring everyone can contribute and learn. The event will conclude with a showcase of the top solutions, with prizes awarded for the most innovative, impactful, and technically impressive projects.
Whether you’re here to code, network, or learn, the Hackathon promises a vibrant atmosphere of experimentation and collaboration. Let’s build the future of cloud computing together!
Time
Name
Speaker
Agenda
09:30 - 13:25
Morning sessions
10:00 - 10:45
Welcome to the Apache Cloudstack Community

Giles Sirett
Chairman of the CloudStack European User Group
10:15 - 10:45
Keynote: Navigating the Next Wave of Innovation

John White
COO, US SIGNAL
In an era where technological advancements shape the future of industries, open source stands at the precipice of the next major disruption. This keynote will explore the current state of the industry and highlight the immense potential for transformation through open-source technologies. Historically, every decade has witnessed a groundbreaking technological leap—from the rise of the internet in 1998 to the advent of virtualization and the iPhone in 2008, the shift to public cloud in 2012, and now, as we approach 2028, the question remains: What will be the next seismic shift?
In this keynote, John White, Chief Operating Officer at US Signal will address:
- The Why: The fundamental reasons driving the shift towards open source and its disruptive potential.
- Future State: Projections and possibilities for what the technological landscape might look like with widespread open-source adoption.
- Limiting Factors: Challenges and obstacles that could impede this transformation including compute processing limitations, government regulations, power constraints, AI oversight, vendor disruptions, and public cloud failures.
- Gotchas: Unforeseen pitfalls and considerations businesses must be aware of.
Join us as we chart a course towards a future where open source is the driving force in the technological revolution. Together, we will unlock new opportunities, mitigate risks, and help shape a more innovative, efficient, and inclusive digital world.
13:25 - 14:30
Lunch Break
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Venere
Mercurio
Nettuno
14:30 - 17:30
Venere Room Sessions

Abhishek Kumar
Software Engineer, ShapeBlue
14:30 - 15:00
Scaling CloudStack to 100K Hosts and Millions of Instances

Abhishek Kumar
Software Engineer, ShapeBlue
Discuss the why, how, and what of an exciting CloudStack scalability project aimed at significantly expanding its capacity to support 100,000 hosts and millions of VMs, volumes, networks, accounts, and domains. Explore CloudStack’s current scalability limits and assess how much further we can push its boundaries. Discuss the innovations, challenges, and strategies required for CloudStack to thrive in hyper-scale environments, and consider what it would take to achieve this ambitious level of performance and reliability.
15:10 - 15:40
The Importance of a Proper Out-of-Band Network When Running CloudStack

Wido den Hollander
CTO, YOUR.ONLINE
15:10 - 15:40
The Importance of a Proper Out-of-Band Network When Running CloudStack

Wido den Hollander
CTO, Your.Online
Often overlooked, but super important: A proper Out-of-Band network. When everything goes wrong you need proper access to your CloudStack environment in order to diagnose and resolve any issues. A OOB network is very important. How to design and implement a good OOB network and have CloudStack benefit from it?
14:30 - 17:30
Mercurio Room Sessions

Philipp Reisner
CEO, LINBIT
14:30 - 15:00
Majority in DRBD

Philipp Reisner
CEO, LINBIT
LINSTOR/DRBD became a primary storage option for ApacheCloudStack nearly three years ago. In this session, Philipp will share insights about how DRBD avoids split-brain situations. DRBD relies on the principle of quorum, and Philipp will dive into the topic and explain all its interesting aspects. How does it deal with an even number of replicas, what does last-man-standing mean in the context, and how does it recover a primary that lost quorum? The session will also briefly discuss how it interacts with failover in CloudStack and how we could improve that with future development. The session will touch on all the theoretical aspects and also have the necessary configuration snippets relevant to the deployment of LINSTOR/DRBD in the context of ApacheCloudStack.
15:10 - 15:40
Enhancements to CloudStack Kubernetes Service

Pearl Dsilva
Software Engineer, ShapeBlue
15:10 - 15:40
Enhancements to CloudStack Kubernetes Service

Pearl Dsilva
Software Engineer, ShapeBlue
With growing popularity of the CloudStack Kubernetes Service, efforts have been made to further improve this plugin and provide more flexibility. As of ACS 4.21, CKS will support deploying clusters with custom templates, with the ability of configuring different offerings and templates for different Kubernetes node types. It will also have support to add external nodes (VMs / bare metal hosts) as worker nodes to a pre-created CKS cluster. To adapt to production standards, CKS will now support unstacked ETCD as well and will also have a CNI plugin framework which will provide users the flexibility to use a CNI of their choice. In this talk, we will also delve into the CloudStack CSI driver and it’s integration with CloudStack.
14:30 - 17:30
Nettuno Room Sessions

Tom O’Dowd
Director Engineering, Cloudian
14:30 - 15:00
Scaling CloudStack to 100K Hosts and Millions of Instances

Abhishek Kumar
Software Engineer, ShapeBlue
Discuss the why, how, and what of an exciting CloudStack scalability project aimed at significantly expanding its capacity to support 100,000 hosts and millions of VMs, volumes, networks, accounts, and domains. Explore CloudStack’s current scalability limits and assess how much further we can push its boundaries. Discuss the innovations, challenges, and strategies required for CloudStack to thrive in hyper-scale environments, and consider what it would take to achieve this ambitious level of performance and reliability.
14:35 - 15:35
Workshop: Unified Cloud Environments: Maximizing Data Efficiency with CloudStack and Cloudian Integration

Tom O’Dowd
Director Engineering, Cloudian
14:30 - 15:00
Scaling CloudStack to 100K Hosts and Millions of Instances

Abhishek Kumar
Software Engineer, ShapeBlue
Discuss the why, how, and what of an exciting CloudStack scalability project aimed at significantly expanding its capacity to support 100,000 hosts and millions of VMs, volumes, networks, accounts, and domains. Explore CloudStack’s current scalability limits and assess how much further we can push its boundaries. Discuss the innovations, challenges, and strategies required for CloudStack to thrive in hyper-scale environments, and consider what it would take to achieve this ambitious level of performance and reliability.
Time
Name
Speaker
Agenda
09:30 - 13:25
Morning sessions
10:00 - 10:45
Welcome to the Apache Cloudstack Community

Giles Sirett
Chairman of the CloudStack European User Group
10:15 - 10:45
Keynote: Navigating the Next Wave of Innovation

John White
COO, US SIGNAL
In an era where technological advancements shape the future of industries, open source stands at the precipice of the next major disruption. This keynote will explore the current state of the industry and highlight the immense potential for transformation through open-source technologies. Historically, every decade has witnessed a groundbreaking technological leap—from the rise of the internet in 1998 to the advent of virtualization and the iPhone in 2008, the shift to public cloud in 2012, and now, as we approach 2028, the question remains: What will be the next seismic shift?
In this keynote, John White, Chief Operating Officer at US Signal will address:
- The Why: The fundamental reasons driving the shift towards open source and its disruptive potential.
- Future State: Projections and possibilities for what the technological landscape might look like with widespread open-source adoption.
- Limiting Factors: Challenges and obstacles that could impede this transformation including compute processing limitations, government regulations, power constraints, AI oversight, vendor disruptions, and public cloud failures.
- Gotchas: Unforeseen pitfalls and considerations businesses must be aware of.
Join us as we chart a course towards a future where open source is the driving force in the technological revolution. Together, we will unlock new opportunities, mitigate risks, and help shape a more innovative, efficient, and inclusive digital world.
13:25 - 14:30
Lunch Break
Lorem ipsum dolor sit amet, consectetur adipiscing elit. Ut elit tellus, luctus nec ullamcorper mattis, pulvinar dapibus leo.
Venere
Mercurio
Nettuno
14:30 - 17:30
Venere Room Sessions

Johan Andersson
CTO, Severalnines
09:30 - 10:00
Building a Sovereign DBaaS supporting CloudStack

Johan Andersson
CTO, Severalnines
In this talk Johan Andersson, CTO and Co-Founder of Severalnines, will discuss how Severalnines implemented a scalable, Sovereign DBaaS for open-source databases on CloudStack for Pappaya Cloud. Attendees will learn practical considerations for native Kubernetes Control Plane (CP) infrastructure design and get pointers on how to build integrations between the CP and CloudStack from authentication to Day 2 operations automation. They will also learn about the specific techniques and tooling needed to streamline and automate core DBaaS workflows, such as infrastructure integration, scaling, high availability and disaster recovery, user and tenant management, and more!
10:10 - 10:40
CDLAN Open to Innovation the Choice Was CloudStack

Marco Ziglioli
Cloud Architect, CDLAN
10:10 - 10:40
CDLAN Open to Innovation the Choice Was CloudStack

Marco Ziglioli
Cloud Architect, CDLAN
CDLAN is a Milan based Telecommunications provider in Italy specialized in the B2B market. When we began to look into offering cloud services, we were wary of being locked into a $$Vendor$$ Our choice fell on cloudstack and it is heavily used in our B2B cloud services today. Join us to hear our story on why and how cloudstack has become an integral part of our offering.
14:30 - 17:30
Mercurio Room Sessions

Alex Saroyan
CEO, Netris
09:30 - 10:00
Network Architecture for public and GPU-based AI cloud providers

Alex Saroyan
CEO, Netris
This talk will discuss the challenges and solutions of networking for GPU-based AI training clusters. It will also offer a Q&A to share experiences of launching GPUaaS clouds based on NVIDIA and Generic GPU and Networking stacks
10:10 - 10:40
Snapshot Copy Using Primary Storage

Nikolay Tenev
Solutions Architect, StorPool
10:10 - 10:40
Snapshot Copy Using Primary Storage

Nikolay Tenev
Solutions Architect, StorPool
Apache CloudStack 4.19 introduced a new feature called “Snapshot Copy.” It allows you to take a snapshot of a volume in one zone and copy it to another and can be employed in Disaster Recovery scenarios. The implementation depends on the secondary storage and secondary storage VM to copy the snapshots between the zones. This is good for infrequent snapshot copies, but it can become a problem when a large number of snapshots have to be regularly copied. To solve this, we added a new feature, “Snapshot Copy Using Primary Storage”. It optimizes the dataflow and improves efficiency and capacity by offloading the copy operation to the primary storage. Join us as we’ll discuss how it works and the specifics of the process. If you are planning to implement disaster recovery to your cloud services or want to implement this feature to different storage plugins you don’t want to miss this one.
14:30 - 17:30
Nettuno Room Sessions

Wido den Hollander
CTO, Your.Online
09:30 - 11:30
Workshop: Deploying CloudStack with BGP, EVPN and VXLAN

Wido den Hollander
12:00 - 12:30
How CloudStack is Helping Leaseweb to Run Cloud Globally

Neven Dogovic
Product Owner Public Cloud, Leaseweb
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Lorem ipsum dolor sit amet, consectetur adipiscing elit. Ut elit tellus, luctus nec ullamcorper mattis, pulvinar dapibus leo.
11:40 - 12:10
Workshop: Native encryption support with LINSTOR

Rene Peinthor
Software Developer, LINBIT
11:40 - 12:10
Workshop: Native encryption support with LINSTOR

Rene Peinthor
Software Developer, LINBIT
11:40 - 12:10
Workshop: Native encryption support with LINSTOR

Rene Peinthor
Software Developer, LINBIT
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Lorem ipsum dolor sit amet, consectetur adipiscing elit. Ut elit tellus, luctus nec ullamcorper mattis, pulvinar dapibus leo.

Learn from the Best
Watch stand out talks from last year’s event, featuring insights from high-profile IT executives and seasoned Apache CloudStack™ contributors and developers.
#CSCollab2024 Event Gallery
The Apache CloudStack Collaboration Conference is one of the events I look forward to every year. It’s a fantastic opportunity to connect with the community, exchange ideas, and collaborate with people who are interested in open-source cloud infrastructure. It’s always great to attend, share knowledge, and contribute to making CloudStack even better.
Wido den Hollander
I think the conference gives a great opportunity to everyone in the community, be it an individual, a small and midsize business, or an enterprise, to participate, collaborate, learn about what is coming in CloudStack and to meet and network with people.
Rohit Yadav
The CloudStack Collaboration Conference is a great opportunity to meet the global CloudStack community, exchange knowledge, and discuss real-world use cases. At Netris, we’ve seen how these conversations lead to valuable insights and practical business. I highly recommend attending to connect, learn, and partner with the CloudStack community and ecosystem.
Attending CCC is a unique opportunity to connect with industry experts, learn from real-world case studies, and explore the latest innovations in open-source cloud computing. Whether you’re a developer, operator, or decision-maker, this event provides invaluable insights, hands-on workshops, and networking opportunities to help you build, scale, and optimize your cloud infrastructure.
The CloudStack Collaboration Conference is the place to meet the leading Apache CloudStack users, contributors, supporters and ecosystem players. It helps you engage with the community, learn about the latest developments and get business done.
I’m excited to attend the upcoming CCC, where professionals can hear firsthand from other users about their real-world experiences. This event offers incredible networking opportunities and the chance to engage with key community contributors, providing valuable insights and connections to drive innovation in cloud computing.
CloudStack Collaboration Conference is a must-attend for anybody running, integrating with or evaluating Apache CloudStack. It offers unique opportunities to meet other users, understand the latest developments and interact with the CloudStack developer community.