How fast can I expect a response if I open a critical Azure support ticket through CSP?

Response times depend entirely on your specific partner's support commitments (often defined in an SLA) rather than a fixed Microsoft-wide standard — some partners offer 24/7 response for critical issues, others operate business hours only with after-hours escalation paths for true emergencies.

If response time for critical issues matters to your business (e.g. production systems that can't tolerate extended downtime), it's worth getting a partner's specific SLA commitments in writing rather than assuming a particular response time.