A company uses SaaS and IaaS solutions from multiple cloud providers. Users report that this requires them to manage and remember multiple user accounts and passwords. Which of the following solutions

SSO (Single Sign-On) enables users to authenticate once with a single set of credentials and gain access to multiple independent software systems without re-authenticating. This directly solves the problem of users managing and remembering multiple user accounts and passwords across different cloud solutions.

Federation establishes trust between identity providers but SSO is the user-facing outcome that resolves the multiple credential issue, making SSO a more direct and comprehensive solution to the problem statement.

Password synchronization replicates passwords across directories but does not eliminate the need for multiple login prompts or consolidate accounts without an overarching SSO solution.

Lowered password complexity would make passwords easier to remember but significantly compromises security, which is an undesirable and counterproductive solution.

Multifactor authentication enhances security by requiring multiple verification methods but does not reduce the number of distinct accounts or passwords a user must manage.