CloudstackCollab.org

CloudStack Collaboration Conference

19-21 November 2025

Milan, Italy

STARTING IN

00d 00h 00m 00s

GET READY

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.

Subscribe to our YouTube

Secure Your Ticket

Register now to take advantage of early-bird passes before they’re gone.

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

Super Early Bird

Valid until July 31st

69

Early Bird

Available 01/08 – 30/09

99

Standard Tickets

Available 01/10 – 21/11

199

Accommodation and Visa Information

#CSCollab2025 will be taking place in Milan, Italy, at the Enterprise Hotel

Subscribe to the event newsletter to keep you in the loop!

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.

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

Boyan Ivanov

Boyan Ivanov

CEO, StorPool

Giles  Sirett

Giles Sirett

CEO, ShapeBlue

Will Stevens

Will Stevens

CTO, Aptum

Wido den Hollander

Wido den Hollander

CTO, Your.Online

Aron Wagner

Aron Wagner

CEO, AMERICAN CLOUD

Philipp Reisner

Philipp Reisner

CEO, LINBIT

Swen  Brüseke

Swen Brüseke

CEO, proIO

Rohit Yadav

Rohit Yadav

VP Engineering, ShapeBlue

John White

John White

COO, US SIGNAL

Oliver Lambert

Oliver Lambert

CEO, VATES

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

Lorem ipsum dolor sit amet, consectetur adipiscing elit. Ut elit tellus, luctus nec ullamcorper mattis, pulvinar dapibus leo.

10:15 - 10:45

Keynote: Navigating the Next Wave of Innovation

John White

COO, US Signal

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

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

Lorem ipsum dolor sit amet, consectetur adipiscing elit. Ut elit tellus, luctus nec ullamcorper mattis, pulvinar dapibus leo.

10:15 - 10:45

Keynote: Navigating the Next Wave of Innovation

John White

COO, US Signal

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

CTO, Your.Online

12:00 - 12:30

How CloudStack is Helping Leaseweb to Run Cloud Globally

Neven Dogovic

Product Owner Public Cloud, Leaseweb

Lorem ipsum dolor sit amet, consectetur adipiscing elit. Ut elit tellus, luctus nec ullamcorper mattis, pulvinar dapibus leo.

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

Lorem ipsum dolor sit amet, consectetur adipiscing elit. Ut elit tellus, luctus nec ullamcorper mattis, pulvinar dapibus leo.

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