Survey Back Office is a product which we innovated & developed in 2013 and was implemented in beginning of 2014. It is a cloud solution served as SaaS model. It’s core technology is php and we used yii framework to build a solution. The data operation are manged in MySQL. Also high level of AWS cloud services are been implemented in this portal.
The major challenging part was getting live redirection with status and preventing duplicate surveys by same respondents. we have also locked duplicate surveys from same device.