I am considering a purchase of Craft Pro in place of a new ExpressionEngine build for a client. One of the client's requirements is that there be a comprehensive set of logs like Audit Pro of what each user is doing (logging on, deleting entries, changing settings) and when. Is that data logged in Craft Pro, or is there a plugin that would accomplish that functionality?
I don't know of a plugin that exists expressly for this purpose, but you could combine LumberJack (logging plugin) with Craft's numerous events to make this happen with your own plugin. You can log from within said plugin or even in your Craft templates.
Take a look at the event reference and see if there's enough there to satisfy your client's needs. Creating your plugin should be pretty straightforward.
It may also be worth noting that Craft's logs are available from the control panel at
/admin/utils/logs. These are developer-centric errors and warnings though, not a record of specific user actions.
We've discussed the ability to have an "audit trail" of actions for a given user in Craft, so you can see exactly who did what, where and when, but given that it's a relatively minor use-case and would have a potential performance impact, it would either be a config setting turned off by default or a first or third-party plugin.