Trying to summarize the 50 plus year history of the Porsche 911 is a huge ask for anyone. Doing it in 90 seconds seems impossible.
But the folks at Dount Media took this task to heart and created a fantastic animation showing the evolution of the 911. Every generation is covered with every little change pointed out. Yes, that means it includes the model designations. So if you are confused what a 930 or a 964 is, this will clear it up.
It is hard to believe back in 1964, Porsche decided to build a sports car with the engine behind the rear axle. It seemed like a doomed idea from the start as it would turn you around when going into a corner. But Porsche was stubborn and over the next 50 years, the 911 would go under constant development to make it into the iconic model we now know.