SaaS stands for Software as a Service, which is a cloud model that allows users to access software applications over the internet without installing or maintaining them on their own devices. SaaS will allow all data to be kept on the third-party network, because the software applications and the data they generate or process are stored on the cloud provider's servers. VDI, CASB, and FaaS are other terms related to cloud computing or security, but they do not match the description of keeping all data on the third-party network. Reference: https://www.ibm.com/cloud/learn/software-as-a-service