How do you defeat the Ender Dragon in Minecraft?

To defeat the Ender Dragon in Minecraft, one must first prepare sufficiently with strong armor, weapons (preferably a bow with arrows or an enchanted sword), and healing items such as potions and food. Upon entering the End dimension, it is crucial to destroy the Ender Crystals atop the obsidian pillars to prevent the dragon from healing. This can be done using ranged attacks with a bow or by climbing the pillars and striking them directly, although this comes with greater risk due to their explosive properties. After all crystals are destroyed, the player must then engage the Ender Dragon, capitalizing on moments when it perches on the portal frame to attack its head for maximum damage. Constant movement is key to avoid its breath and charge attacks. Once defeated, the Ender Dragon will drop experience orbs and an egg that signifies victory in this challenging battle.