Regular logs are just whatever your app logs normally (engineering/debug). Process logs are business processes that you need to report on or answer for later.

Regular logs are just whatever your app logs normally (engineering/debug). Process logs are business processes that you need to report on or answer for later. Audits are another business layer for safety or life critical data, or adversarial data (handling money based transactions). They could be compliance related. Auditing is a three step process - Ask a question, figure out how to answer it, and make sure you've answered it. So specifically, if you have a magic bean shop and you want to log transfer of the beans, that would be a process log. Then at the end of the day, you would send a manifest of all the beans sent that day. The audit process would look at the final location of the beans, and also at the process log to answer your audit questions. --- I think a lot of people make a hard distinction between business logging and engineering logging, and I'm not sure that makes sense.