The content audit process isn’t a whole lot different than any other sorting task whether its weeding a garden or redesigning an existing enterprise site and migrating it to a cutting edge platform like Sitecore. If that sounds simplistic, it is. Good processes should be clear and simple. Even the simplest processes can be confusing until you actually do the work, which is why content inventories and content audits often get confused.
A content inventory is simply a list of the content you have in your current site or sites, along with things like meta data, H1 fields, and other required information about each content item. A content audit is both a review and organization of that inventory as well as a more robust quantitative and qualitative analysis.
This guest post I did for Sitecore’s Best Practice Blog provides a good overview of how to do an inventory and the next steps you need to take that inventory and start organizing content for your audit.