What major technology company is based out of South Korea?

Could you possibly enlighten me about a significant technological enterprise that calls South Korea its home? I'm curious to know which major player in the global tech scene hails from this region, given its renowned advancements in various technological fields. Would you happen to know the name of this prominent company, perhaps one that is renowned for its innovative products or services? Your insights would be greatly appreciated as I seek to expand my knowledge on this topic.