fhis is a subjective question, hence you have to write your answer in the Text-Field given below. Identify and justify the message delivery mechanisms used in the following use cases a) Geo coordinates of various cabs in a cab application such as uber. b) An e-commerce application with inbuilt recommendation engine to keeping track of all purchases in real time. Messaging from the real time system includes details on the volume of purchases recently made for the same item that the current user is browsing c) A machine performance tracking system of a datacenter that aims at recording each computer's data such as temperature of processor, fan speed, voltage drawn from the power supply. The data is collected and aggregated in real time through variety of mechanisms. [2+2+2=6Marks]