What is the full form of EOS?

Could you please clarify for me the full form of EOS? I've heard it mentioned frequently in the context of blockchain technology and cryptocurrencies, but I'm not entirely sure what it stands for. Could you elaborate on its significance in the world of finance and digital assets? I'm particularly interested in understanding its role in the ecosystem of decentralized applications and smart contracts. Would you mind explaining it in a way that's accessible to someone who's still exploring this area? Thank you in advance for your assistance.