This log file was collected by aggregating a number of logs from a lab computer running Windows 7. The original logs locate at C:\Windows\Logs\CBS. CBS (Component Based Servicing) is a componentization architecture in Windows, which works at the package/update level. The CBS architecture is far more robust and secure than the installers in previous operating systems. Users benefit from a more complete and controlled installation process that allows updates, drivers and optional components to be added while simultaneously mitigating against instability issues caused by improper or partial installation.