Look at Symbol Blog Articles
https://symbolplatform.com/latest/business-applications-of-multi-level-multi-sig
https://symbolplatform.com/latest/public-private-blockchain-hybrid-systems-explained
https://symbolplatform.com/latest/eliminating-fraud-and-ensuring-the-authenticity-of-fine-wine-throughout-the-supply-chain-using-symbol-blockchain
https://symbolplatform.com/latest/symbol-is-primed-to-facilitate-tokenization-and-sto-issuance