After you have selected your IAM tools and platforms, you need to implement IAM best practices to ensure that your IAM architecture is secure, efficient, and effective. These include following the principle of least privilege, enforcing strong password policies, using multi-factor authentication, implementing single sign-on, managing user lifecycle, and monitoring and auditing IAM activities and events. Following the principle of least privilege means granting users only the minimum access they need to perform their tasks and reducing the risk of unauthorized or malicious actions. Strong password policies should include requiring complex and unique passwords, changing them regularly, and using password managers or vaults to store them securely. Multi-factor authentication requires users to provide more than one piece of evidence to verify their identity. Single sign-on allows users to access multiple applications or systems with one set of credentials, reducing the hassle of managing multiple passwords and improving the user experience. Managing user lifecycle involves creating, updating, suspending, and deleting user accounts and permissions according to the changes in their roles, responsibilities, and status. Lastly, monitoring and auditing IAM activities and events involves tracking and logging who accessed what resources and when, how, and why, as well as analyzing the data for anomalies, errors, or breaches.