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Realtime data currently enables some of our most beloved apps: Slack, Google Maps, Uber, Lyft… the list goes on. It has become essential for our time-sensitive, reactive lifestyles, where even a few seconds of delay causes us substantial grief. Realtime has become a cornerstone of big data and IoT, where the faster the data is received, the faster it can be processed and made actionable. The difference between your app succeeding or failing will come down to its reliability, functionally, and ultimately its speed.