Security team that simulates real-world attacks to test an organization's defenses and identify vulnerabilities. Like having a team of friendly burglars test your security.
The red team attempts to phish employees, exploit network vulnerabilities, and breach physical security to find weaknesses before real attackers do.
Red Team is a security practice (an adversary-simulation exercise), not a single cloud service. All major cloud providers support red teaming through security tooling, logging, and incident response services, but the red team itself is typically an internal function or a specialized consulting engagement.