What must be used to share data between multiple security products?

Cisco Stealthwatch Cloud is a cloud-based network detection and response solution focused on visibility and threat detection, not a general data sharing fabric for multiple security products.

Cisco Advanced Malware Protection (AMP) is a solution for protecting against malware across endpoints, network, and email, not a platform for sharing data between disparate security products.

Cisco Platform Exchange Grid (PXGrid) is a security platform that allows different security products from Cisco and third-party vendors to share threat intelligence and context information bidirectionally. This enables integrated security operations and automated threat responses across a diverse security ecosystem.

Cisco Rapid Threat Containment is a security feature that automates actions to contain threats, often utilizing PXGrid, but it is not the underlying mechanism for data sharing itself.