Is USDC centralized or decentralized?

I'm not quite certain whether USDC is fully centralized or decentralized. Could you please elaborate on this matter? I've heard conflicting opinions about its structure, with some people arguing that it's backed by traditional financial institutions, indicating a certain degree of centralization, while others claim it operates more autonomously, hinting at decentralization. Could you clarify this for me? It's important for me to understand the underlying mechanisms of USDC as I'm considering investing in it. I'd appreciate a detailed explanation of its architecture and governance model to help me make an informed decision. Thank you in advance for your assistance.