What do we mean by the cloud?

“The cloud” is one of the most overused phrases in technology — and one of the least precisely defined. To a marketing team, it means their CRM is hosted by Salesforce. To a developer, it might mean AWS Lambda functions and S3 buckets. To a small business owner, it means their files are in Google Drive. All of these things are technically correct, which is exactly why the phrase causes so much confusion when organizations try to make infrastructure decisions based on it.

At its core, “the cloud” simply means computing resources — servers, storage, networking, software — delivered over the internet rather than running on hardware you physically own and manage. The resource could be a virtual machine, a managed database, a file storage bucket, or a fully hosted application. What makes it “cloud” is that the underlying hardware is abstracted away and accessed remotely, typically on a pay-per-use or subscription basis.

Where it gets more nuanced is in the different models of cloud deployment, each with distinct trade-offs around cost, control, performance, and compliance. Understanding these models is essential before making infrastructure decisions:

The right deployment model depends on what you’re running, who needs to access it, what regulations apply to your data, and how much operational control your team wants to retain. Most mature organizations end up with a hybrid approach — using public cloud services where they make economic sense, private infrastructure where control and compliance demand it, and secure connectivity between the two.

At w3K, we design and manage private cloud environments built on Proxmox VE — giving clients the performance and control of dedicated infrastructure with the flexibility and operational simplicity associated with cloud platforms. Your data stays on hardware you own, in an environment we manage.

Public cloud providers — AWS, Google Cloud, Microsoft Azure — offer virtually unlimited scale and a catalog of managed services that would take years to replicate in-house. For applications with variable traffic, development environments, and services where vendor management is acceptable, public cloud is an excellent fit. The economics work well at low to mid scale; they become less favorable as resource consumption grows predictably and the operational overhead of cloud-native architecture compounds.

Private cloud — whether on-premise or in a colocation facility — offers maximum control over hardware, software, and data. It requires more upfront planning and ongoing management, but eliminates per-unit cost scaling, removes vendor dependency from your critical infrastructure, and gives you a clear answer to any compliance or data sovereignty question. For organizations handling sensitive data or operating under regulatory frameworks, private cloud is often the correct choice.

Self-hosted infrastructure — running applications on servers you own and operate — is the most misunderstood option in the cloud conversation. It is frequently dismissed as outdated or operationally burdensome, and frequently chosen by organizations that understand exactly what they’re getting: total control, predictable costs, and zero dependency on a vendor’s pricing model, terms of service, or business continuity.

The honest answer to “what should we use?” is that it depends — on your workload, your team’s capabilities, your budget, your compliance requirements, and your risk tolerance. The best infrastructure is the one that reliably serves your business without creating operational debt you can’t manage. Getting to that answer requires an honest assessment of your actual needs, not a default toward whatever the current industry conversation is promoting.