VMware vSphere PowerCLI is based on Microsoft PowerShell and uses the PowerShell basic syntax and concepts.

Microsoft PowerShell is both a command-line and scripting environment, designed for Windows. It uses the .NET object model and provides administrators with system administration and automation capabilities. To work with PowerShell, you run commands, called cmdlets.

PowerShell cmdlets use a consistent verb-noun structure, where the verb specifies the action and the noun specifies the object to operate on.

A pipeline is a series of commands separated by the pipe operator |.

PowerShell has a number of pattern-matching operators called wildcards, which work on strings.

The Windows PowerShell engine implements a set of reserved parameter names, referred to as common parameters. All PowerShell cmdlets, including the PowerCLI cmdlets, support them.