In PowerShell, what does the term 'pipeline' refer to?

The term 'pipeline' in PowerShell refers specifically to the ability to connect cmdlets and pass outputs from one cmdlet directly into another. This is a fundamental feature of PowerShell that enables users to build complex command sequences in a concise and readable manner. When you use the pipeline, the output of one cmdlet becomes the input for the next cmdlet. This allows for efficient data processing and manipulation without the need to store interim results in variables.

For example, when you run a command that retrieves a list of files and then pipe that output to another command that filters or processes those files, you are leveraging the power of the pipeline. This chaining of commands not only streamlines the workflow but also enhances productivity by making scripts easier to read and maintain.

The other options do not accurately describe the concept of the pipeline in PowerShell. Logging errors pertains to error handling rather than the connection of cmdlets, syntax for function definitions relates to how functions are structured in PowerShell, and array processing methods refer to different techniques for handling collections of data, rather than the interactive flow created by the pipeline.