Amazon CloudFront access logs provide detailed information about every user request that CloudFront receives. Starting today, seven additional data fields will now appear in your CloudFront access logs to improve visibility into the delivery of your content. For example, with the x-edge-detailed-result-type field you can identify the specific type of error and with the sc-range-start/sc-range-end fields you can determine the requested range details. These new fields are appended to the end of each log entry to maintain backwards-compatibility with the previous log file format. The seven new data points include: