I would use two factor authentications to improve security because it will require a second form of identification to access sensitive information and increase flexibility by allowing users to access their accounts from different devices and locations. I would also have regular backups and disaster recovery planning to back up critical data and systems to restore operations in the event of a system failure, cyber-attack, or data corruption. Additionally, having a comprehensive disaster recovery plan that outlines procedures for restoring services and data in various scenarios helps minimize downtime and ensures business continuity.