Wind is a self-custodial wallet which means you have full control over your account. Self-custodial wallets are made to eliminate third-party interference in your account. Only you can access your funds and no one, not even us, can access them in any way.
Wind wallet currently exists in the Polygon blockchain and secured by MPC architecture through Web3Auth.
Because the wallets exist in the blockchain - you will always have access to your account, even if Wind ever shuts down. Your wallet is secured by a private key/public key pair that you will always have access to. Wind can never close down your account, or take access of your money without your explicit permission. This makes a Wind wallet the safest way to store your money.