For more information, see the Logging section of the Values That You Specify When You Create or Update a Web Distribution topic.
These access logs are available for both web and RTMP distributions.
One way to analyze your access logs is to use Amazon Athena.
Athena is an interactive query service that can help you analyze data for AWS services, including Cloud Front.
The log entry for a particular request might be delivered long after the request was actually processed and, in rare cases, a log entry might not be delivered at all.
When a log entry is omitted from access logs, the number of entries in the access logs won't match the usage that appears in the AWS usage and billing reports.