Policy as Code (PaC)
What it is
Policy as Code is the practice of storing the definition of policies as one or more files in machine-readable and processable form. This replaces the traditional model where policies are documented in human-readable form in separate documents.
Problem it addresses
Building applications and infrastructures are often constrained by many policies that an organization defines, e.g. security policies that forbid storing secrets in source code, running a container with superuser permissions, or storing some data outside a specific geo region. It is very labor-intensive and error-prone for developers and reviewers to manually check applications and infrastructure against documented policies. Manual processes cannot meet the responsiveness and scale requirements of cloud native applications.
How it helps
Describing policies through code enables repeatability and reduces errors (unlike when done manually). Another advantage of Policy as Code is that code can be managed by a version control system like Git. Git creates a change log history which is particularly helpful when something does not work as expected. It allows the user to determine who made the change and revert back to a previous version.
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