Multicloud strategy involves using more than one cloud provider to host an enterprise architecture, distinguishing it from hybrid cloud, public, and private clouds. This approach offers flexibility in scalability, security, and cost management, as well as the ability to pick and choose features from multiple cloud services. Multicloud infrastructure uses two or more public cloud providers and can combine with private environments, allowing for data replication, improved availability, and reduced latency. However, multicloud adoption also presents challenges such as increased complexity, security risks, vendor lock-in, and higher costs, requiring careful planning and management to ensure successful implementation.