: There is much information that web server logs contain which will never be available to Google Analytics, two things I can think of: Errors like 404, etc. Access on media files, like pictures,

@Murray432

There is much information that web server logs contain which will never be available to Google Analytics, two things I can think of:


Errors like 404, etc.
Access on media files, like pictures, etc. (including external websites linking to your images)
IP addresses, although an answer to another question pointed out that it can be set as a user variable
Full length referral URLs, for example Google sends links from product search, web search, etc. each search has keywords but Google Analytics does not display the other variables like &source=products, etc.


Must be more stuff I just can't think of right now.

And there are also the error logs; must be important for a website to run smoothly, in my opinion. Not something you would ignore.

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