Cloud tooling built for developers
Open-source projects, Azure emulation, and educational resources — everything to make your cloud journey faster and more productive.
Open-source projects, Azure emulation, and educational resources — everything to make your cloud journey faster and more productive.
Open Source
Tools and libraries built to solve real cloud development problems.
Flagship
Local Azure emulator. Run Azure services like Storage, Service Bus, Event Hubs, and more — entirely on your machine, no cloud subscription required.
View on GitHub →
FinOps
Estimate Azure infrastructure costs directly from ARM / Bicep templates before you deploy — fits neatly into CI/CD pipelines.
View on GitHub →Published
Practical guides to Azure development and administration, published by Packt.
A hands-on guide covering the core Azure services, patterns, and best practices every developer building on Azure needs to know.
View on Amazon → Packt · AmazonA comprehensive walkthrough of administering Azure environments — identity, governance, networking, storage, and compute covered in depth.
View on Amazon →About
The Cloud Theory is an independent brand focused on building open-source tooling that makes Azure development more approachable, faster, and cheaper to iterate on.
Behind the brand is Kamil Mrzygłód — Azure developer, author, and OSS contributor. The projects range from full Azure service emulation to cost estimation tooling and developer extensions.
Tech & focus areas