Cloud & Kubernetes Networking Guides

Subnet sizing in cloud environments is more complex than traditional networking.

Azure, AWS, and Google Cloud all reserve IP addresses inside each subnet.
Kubernetes networking multiplies IP consumption based on node count, pod density, and CNI model.
Incorrect CIDR planning often leads to scaling failures, IP exhaustion, and costly redesigns.

These guides are written for platform engineers, cloud architects, and DevOps teams who need accurate IP planning before deployment.

They are meant to complement the calculators, not duplicate them. The calculators answer “how much space do I need,” while the guides explain why the answer changes across providers and networking models.

Kubernetes Networking Deep Dives

Before deploying production clusters, understand how each provider allocates pod IPs and consumes subnet space.

If you misunderstand where pod IPs come from, subnet exhaustion becomes inevitable.

That single design choice affects almost every other sizing decision you make later.

Cloud Subnet Reservation Rules

Before planning Kubernetes, understand cloud-level reserved IP behavior:

Cloud providers reserve infrastructure IP addresses inside every subnet:

This directly reduces usable capacity.

It is one of the most common sources of confusion when teams move from traditional subnetting references to cloud network design.

CIDR Planning Fundamentals

Understand:

Start here:

Correct subnet design prevents:

These are the pages to read if you want the reasoning behind the calculators rather than just the final number.

Encoding & Utility Guides

Additional reference material:

Latest Cloud Networking Articles

Start with the guides above if you are planning:

If you are trying to avoid “just enough” subnet designs, read the fundamentals first and then validate the result with the calculators.