In this presentation, Swen Brüseke introduced proIO's strategy for 100% open-source driven private clouds. proIO leverage the proven technologies of CloudStack and LINBIT, complemented by professional maintenance contracts, to provide you with a secure, flexible, and high-performance IT infrastructure. He highlighted the advantages of private clouds compared to public cloud offerings and explain why CloudStack is in many cases a superior solution to Proxmox. -- The CloudStack European User Group 2025 took place on May 8th in Vienna, Austria. The event once again brought together open-source cloud professionals, contributors, developers, and users for a day of deep technical insights, knowledge sharing, and community connection.

1. FREEDOM, SECURITY AND CONTROL
Fully Open-Source
Private Clouds

2. What you‘ll
o Why open source is the way to go
o Why a private cloud is a good idea
(still/again)
o How we use Cloudstack and LINSTOR
at proIO
o Why it makes sense to rethink the
concept of infratructure based on
open-source
A GE NDA

3. REA S ON WHY
SWEN BRÜSEKE
CEO
I believe that freedom, security and
control over your own data is only
truly achievable in conjunction with
open source and private
infrastructures.

4. A BOUT
proIO GmbH
FOUNDED IN 2004
USING VIRTUALIZATION
SINCE 2008
FIRST CLOUDSTACK
INSTALLATION IN 2013
USING CLOUDSTACK FOR
MANAGED HOSTING
OPEN SOURCE IS
OUR DNA

5. o We believe in open source as the only way to
achieve secure software and transparent data
security.
o For a sovereign cloud, it is not just the location that
is crucial, but also the question of who operates
the cloud and what technology is used.
o Vendor lock-in is slowing down the rate of
innovation and limiting flexibility.
o If you want Enterprise support, get it.
OUR MIS S ION
Open Source is our .
And we use
it to make
Private Clouds
much better…

6. IT SEEMS MORE IMPORTANT THAN EVER:
o Uncertain world politics leads to independence
movement not only for European companies
o Independence becomes the new competitive
advantage
o Protect your business value
E VOL UTION OF CL OUD S
The of Private Clouds
KEY DRIVERS:
o Data sovereignty and compliance (especially
relevant in Germany / Europe)
o Enhanced security and control predictable cost
structures (in certain scenarios)
o Customization and performance optimization

7. Private Cloud vs. Public Cloud:
P RIVA TE C L OUD ADVA NT AGE S
FREEDOM
o Transparency in the choice
of hardware and software
o Independence of
manufacturers (open
source, no vendor-lock)
SECURITY
o Location determination
o Legal regulations and
compliance
o Data Protection
o “Courious neighbors“
CONTROL
o Customization
o Cost Models
(CAPEX vs. OPEX)
o Performance and Latency
o “Noisy neighbors“

8. OPEN-SOURCE CLOUD
MANAGEMENT PLATFORM
o Good fit for small, larger and
complex environments
o Advanced networking, mature
multitenancy, comprehensive API
o Broad ecosystem and industry
adoption
o Supports different hypervisors
RAPID
DEVELOPMENT
o Over 300 fixes and improve-
ments from 4.19.0.0 to 4.19.1.0
o New big feature and
improvements in each release
o VMWare Migration Tool
o Object Storage
o Third Party Plugins
ACTIVE COMMUNITY
o 3.323 mails in users mailinglist
2004
o 420 contributors on Github
o Over 225 merged pull requests,
273 closed issues this year
o 103 active forks in a 1 year period
o Active security patching
o 15 releases in 2024
o Great events all over the world
GOOD RE AS ON S
Why

9. o Comprehensive management of your
entire private cloud stack.
o Full control over your data and
infrastructure.
o Professional maintenance contracts for
support and stability.
o Peace of mind knowing your cloud is in
expert hands.
WHAT WE DO
Private Cloud by

10. o High-Performance Storage at its core
o Highly available and performant software-defined
storage (SDS)
o High availability and data redundancy
o Performance and low latency
o Flexibility and scalability of storage
o Integration with CloudStack
o Enterprise Support available
A N IM PORT A NT P AR T : S TOR AGE
We mainly use

11. Time for your
questions
Q&A

12. Let‘s
!
C ON TA CT
swen@proio.com
+49 69 7390490
SWEN BRÜSEKE
Geschäftsführer proIO
PROIO GMBH
info@proio.com