Warning! This article contains spoilers for Star Wars: The High Republic – Shadows of Starlight #4 The moment Palpatine executed Order 66, he officially acted on a plan that was decades in the making: wiping out the Jedi, overthrowing the Republic, and taking over the Star Wars galaxy. While the death and destruction that proved necessary for such a move was as horrific as it was impressive, the real mastery behind the plan wasn’t the ‘Order 66’ aspect of it at all. Indeed, many would-be conquerors have “slaughtered plenty of Jedi”, but only Palpatine did so to the end of taking over the galaxy, and another villain’s failed attempt to do so in Star Wars’ past confirms how Palpatine succeeded where so many others failed.

https://screenrant.com/star-wars-jedi-palpatine-smartest-part-order-66/