Public Cloud Is Where Most Businesses Run Today. And Here Is How to Use Them Securely

Public cloud is not one platform; it is three dominant ecosystems, dozens of service models, and thousands of configuration decisions. This is where you understand all of it.

WHAT IS PUBLIC CLOUD

Computing Infrastructure Delivered Over the Internet
Owned by a Provider, Operated by You

You don’t own the hardware. You configure, deploy, and manage what runs on it. That distinction is everything when it comes to performance, cost, and security.

3 Pillars of Public Cloud

Three Ways Organizations Get Public Cloud Wrong From the Start.

Cloud Bills That Scale Faster Than the Business

Unused resources running overnight, oversized instances, and redundant services across accounts quietly accumulate into costs that shock finance teams at month end.

Choosing the Wrong Service Model for the Workload

Running managed SaaS data tools on self-managed infrastructure. Mismatching the service model to the workload is one of the most common reasons cloud migrations underdeliver on their original promise.

Misconfiguration at the Speed of Deployment

Open storage buckets, overpermissioned roles, and publicly exposed services are not the result of complex attacks, they are the result of moving fast without security guardrails built into the deployment process.

The Scale of Public Cloud Adoption And Why Getting It Right Matters

Mobile devices are the fastest-growing attack surface in enterprise security, and most organizations are still catching up.

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Spent on global cloud infrastructure in Q2 2025 alone was a 25% year-over-year increase.
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Of the global cloud infrastructure is controlled by just three providers, AWS, Azure, and GCP.
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Of cloud security issues are caused by misconfiguration, not sophisticated attacks.
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Of enterprise IT budgets are now allocated to public cloud services making cloud literacy a core business competency

The Core Vocabulary of Public Cloud

IaaS — Infrastructure as a Service

Bare-metal computing, storage, and networking on demand — you handle all the layers above the hardware.

PaaS — Platform as a Service

A managed platform to develop and deploy applications — you concentrate on the code and the provider manages the infrastructure.

SaaS — Software as a Service

A fully managed software solution that you access via a web browser — the provider manages everything from infrastructure to application upgrades.

Shared Responsibility Model

The dividing line, in terms of contract and operations, between what the cloud provider secures and what is the responsibility of the customer to secure.

Cloud Region & Availability Zone

Physical geographic and infrastructure components that influence the location of your data, the level of resilience you receive, and the compliance standards you must meet.

FinOps — Cloud Financial Operations

The practice of controlling cloud expenses through transparency and responsibility, and by optimizing spend to align with the actual value of the business the cloud services.

Go Deep on What Matters to You.

From understanding how public cloud works to mastering multi-cloud architecture. Start where you are.

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