introduction to machine learning and deep learning ecosystem (ios and android)face detection on the cameraauto-correct and predictive text on keyboardsai-enhanced beautification appssmart assistants like siri/alexa/google assistantface-id (face unlock on iphones)video suggestions on youtubefriend suggestions on facebookcat filters on snapchat are all products that were made the state-of-theart only for deep learning essentiallydeep learning is ubiquitous in the today' digital life truth be toldit can be complicated to define deep learning without navigating some historical context  brief history the journey of artificial intelligence (aito its present day can be broadly divided into four partsviz rule-based systemsknowledge-based systemsmachineand deep learning although the granular transitions in the journey can be mapped into several important milestoneswe will cover more simplistic overview the entire evolution is encompassed into the larger idea of "artificial intelligence let' take step-by-step approach to tackle this broad term figure - the ai landscape