Is Stader decentralized?

Could you please elaborate on whether Stader is truly decentralized in nature? It's important to understand the level of decentralization involved in its operations, as it has significant implications on transparency, security, and user control. Could you explain the architecture of Stader, including the distribution of power and decision-making processes, and how they contribute to or detract from its decentralization? Additionally, what measures does Stader take to ensure that its users maintain control over their funds and transactions?