IAM With Strong Authentication

Problem Statement

A multinational corporation with various businesses is moving to the cloud. They need a secure way to manage access to sensitive data and applications across a global workforce and multiple cloud platforms. This includes strong authentication methods, detailed access controls, and integration with existing on-premises systems. Which option offers a cloud-based identity and access management (IAM) solution with fine-grained access control, strong authentication, and on-premises system integration? Implement a cloud IAM like Azure Active Directory or AWS IAM, integrate with on-premises systems via federation, enforce MFA and conditional access, and automate user management with IGA tools. Build a custom IAM solution in-house, use basic password authentication, manually integrate with on-premises systems, and manually manage user lifecycles. Deploy separate IAM systems for each cloud platform, apply uniform access policies, manually sync with on-premises systems from time to time, and man