Aria Automation & vRO
Knowledge Base

A side-by-side reference for engineers working across both environments. Covers the ES5 subset used by vRealize Orchestrator alongside equivalent PowerShell patterns — variables, functions, objects, arrays, control flow, error handling, strings, types, and JSON.

Most engineers arrive at vRO expecting a powerful script runner. That assumption is understandable, and worth reconsidering. APIs are not a layer on top of vRO. They are the foundation everything else is built on.

When to use a PowerShell host, when to stay in JavaScript, and why REST APIs are the foundation of everything Aria Orchestrator does.

You already think in pipelines, approvals, and rollbacks. This article maps Git concepts directly to your infrastructure world — repos, pull requests, CI/CD, and how code gets from a developer's laptop to a production web server.

A practical architecture model for building maintainable, reusable vRO workflows — focused on where logic lives, how it's organized, and what a clean workflow skeleton looks like.

The silent failure modes that trip up even experienced vRO developers — how variable bindings actually work, the five mistakes that produce null without an error, and why Decision elements belong in the schema.

Actions are the infrastructure; workflows are the wiring. How to build a vRO action library that compounds over time, and why the magic is in the bindings.

What separates a workflow that works in a demo from one that holds up in production — intentional outcome handling, pre-flight state acquisition, error handler discipline, and polling patterns that don't lie about completion.