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Practical, provider-accurate writing on cloud infrastructure, developer workflows, security fundamentals and the decisions behind choosing a cloud.

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Layered stack diagram showing which layers the customer and the provider manage under IaaS, PaaS and SaaS

Cloud Fundamentals

IaaS vs PaaS vs SaaS: Where Each Cloud Provider Fits

The three cloud service models are defined by how much of the stack you control. This article uses the NIST definitions to place EC2, Droplets, Heroku, App Platform and managed databases on the map, explains why the lines have blurred,…

5 min read

Heroku build pipeline turning pushed source into a slug that runs on web and worker dynos

Provider Guides

Heroku Dynos and Buildpacks: How the Platform Runs Your App

Two objects explain almost everything surprising about Heroku. A buildpack turns source into a runnable slug, and a dyno is…

7 min read

Hyperscalers

Developer clouds

Platforms

Cloud Journal

IaaS vs PaaS vs SaaS: Where Each Cloud Provider Fits

Heroku Dynos and Buildpacks: How the Platform Runs Your App