1. A system of cloud-based surveillance for a target surveillance area, comprising: at least two input capture devices (ICDs), a cloud-based analytics platform having a processor and a memory, and at least one user device having a display with a user interface; wherein the cloud-based analytics platform is constructed and configured in network-based communication with the at least two ICDs and the at least one user device; wherein each of the at least two ICDs has at least one visual sensor and is operable to capture and transmit input data to the cloud-based analytics platform; wherein the cloud-based analytics platform is operable to: generate 3-Dimensional (3D) visual data based on 2-Dimensional (2D) visual data captured from the at least two ICDs; and perform analytics based on the 3D visual data and captured input data; wherein the at least one user device is operable to display a 3D visual representation of the target surveillance area via the user interface.