Why private cloud is still relevant for modern IT organizations
In recent years, a persistent narrative has been told in the IT sector: public cloud is the future, and anyone still considering private infrastructure is looking backward. That perception is incorrect, and it costs organizations that uncritically adopt it money and control.
Private cloud isn't nostalgic. It's a conscious strategic choice with clear advantages, but also with real costs and responsibilities that you shouldn't underestimate.
The difference that truly matters
Public cloud and private cloud are not variations of the same product. They stem from fundamentally different starting points.
With public cloud you pay for shared use: the provider manages everything, and you scale up effortlessly. That's not just a sales pitch. The flexibility is real, time-to-market is fast, and you don't need to maintain in-house infrastructure expertise. However, this structure also brings limitations. The main pain points: your data leaves your own environment, you have no control over the underlying hardware, and the cost structure quickly becomes complex and difficult to predict as your environment grows.
Private cloud runs on infrastructure set up exclusively for your organization, either in your own data center or with a partner like Epact. You retain full control over network, storage, hypervisor layer, and data location. Security and compliance do not depend on the rules of a large external provider, but on choices you make yourself. But to be fair: private cloud requires a higher initial investment in hardware, demands internal or external infrastructure expertise, and offers less elasticity during unexpected peak loads.
When public cloud falls short
At Epact, we believe that private cloud forms the best foundation for many medium to large SMEs, but not for all. Below, we help you assess when that is the case and when it is not. The three instances where public cloud doesn't live up to its promises are always the same.
1. Cost Management
Public cloud is cheap to start with and expensive to maintain. License costs for specific services, the price of managed databases, network transfers, support contracts, egress costs (cloud providers often charge for data that leaves their cloud, while incoming data (ingress) is often free): the costs accumulate. Organizations that accurately analyze their public cloud costs even regularly discover that they pay significantly more than necessary for a predictable workload. That being said: for irregular or unpredictable workloads, public cloud can indeed be cheaper than owning your own infrastructure.
2. Vendor lock-in
The deeper you integrate into a single provider's ecosystem, the greater your dependency becomes. Migrating to a different environment, or even bringing some of your workloads back in-house, becomes an architectural and budgetary challenge. This dependency also comes with a strategic cost: if the provider changes its pricing policy or product offering, you have little room for negotiation. For completeness: private cloud can also lead to lock-in if you deeply integrate with a single vendor's tooling or hypervisor. The question, therefore, isn't whether you avoid dependency, but from whom and to what extent.
3. Data sovereignty and compliance
For organizations in regulated sectors, such as healthcare, government, finance, or legal services, data location is not a minor detail. GDPR and sector-specific regulations like NIS2 impose concrete requirements on where data is stored and processed, who has access to it, and what guarantees apply. In public cloud, that trust relies on contractual clauses. In private cloud, it's an architectural certainty. This distinction is most pronounced in sectors with high regulatory pressure. For companies without strict compliance requirements, this argument carries less weight.
Business impact: 3 concrete benefits
Predictable TCO
With private cloud, you know your infrastructure costs upfront. No surprises on the bill, no unexpected additional costs during peak usage. This predictability is particularly valuable for multi-year planning, provided your workloads are stable and predictable. If not, the reasoning is reversed: you then pay for capacity you don't always use.
Low latency
Workloads requiring fast response times perform better on infrastructure located geographically close to users. This applies to ERP systems, databases, and any application where milliseconds are noticeable. For workloads where latency is less critical (batch processing, archiving, test environments), this advantage is less decisive.
Maximum control
From hypervisor configuration to firewall rules and backup policies: in a private cloud environment, you (and/or your IT partner) are the sole decision-maker. This makes audits simpler, incident response faster, and architectural choices more autonomous. This control also comes with responsibility: you bear the burden of updates, patches, monitoring, and capacity planning yourself, or you delegate it to a partner who handles it for you in a managed services model.
The hypervisor layer: a strategic choice too often postponed
Those considering private cloud typically focus on architecture, data location, and management model. However, there's a foundational choice that many organizations address too late: which platform powers your virtualization layer?
For years, the answer was obvious: VMware. But due to Broadcom's acquisition of VMware and the drastic changes to its licensing model, costs for many organizations have risen sharply in a short period.
For CIOs and IT managers, this is no longer merely a technical question. It directly impacts the TCO calculation that makes private cloud attractive. Open-source alternatives like Proxmox offer a viable alternative.
If you want to know more about this, our Ebook comparing VMware and Proxmox is interesting reading.
Conclusion
Private cloud is not an obstacle to innovation. It is the infrastructure layer that enables your organization to drive innovation on your own terms, provided your scale, stability, and compliance needs justify it.
For CIOs and IT managers considering their cloud portfolio, the question isn't "public or private cloud?", but "which workloads belong where?" A well-considered private cloud environment at the core of your strategy, supplemented with public cloud capacity where it makes sense, gives you the best of both worlds. Not as a compromise. But as a deliberate architectural choice.