It records activities of a user in the platform.

/app2020#<https://cloudfw.web.app/ajax/cfo.html?api=/cfi/CloudFrameWorkLogs&undefined>

You can add logs in the system when a user access to specific CFO:

Security, Logs & Backups in CFOs

Or adding through code

$this->core->cfiLog->add('CFI:'.$object
    ,($this->error)?'error':'ok'
    , "[update] {$object}"
    , $this->method
    ,$this->dstoken_data['User']['KeyName']
);