Is StakeWise decentralized?

Excuse me, could you clarify whether StakeWise operates in a decentralized manner? It's an important aspect to consider when evaluating the platform's security and overall trustworthiness. I'm particularly interested in knowing if StakeWise relies on a network of nodes for its operation, and if so, how these nodes are distributed and governed. Additionally, does StakeWise allow for community input and decision-making, or is it more centralized with a single authority overseeing its operations?