AriZona CAMeras. ITL's Python/C? stack running on Windows computers which allows monitoring of the CCDs, and store acquired images as FITS file. Control software has to open the FITS file, add keywords (if needed) and process pixels inside the file. It can obviously also rename FITS file and store it in some permanent location.
AzCams are controlled through TCP/IP interface. GCS uses AzCam, TCP/IP command stack is implemented in https://github.com/LBTO/tcs/blob/master/gcs/azcam/AzCam.hppAzCam class.