MDR, or Managed Detection and Response, is a service where a provider monitors your systems, spots threats, and takes action on your behalf. It pairs security technology with human analysts who investigate alerts around the clock, decide which are real, and contain what they find.

Most small and mid-sized businesses do not have the budget to staff a 24/7 security team of their own. MDR gives them that coverage without having to hire it. A good MDR provider watches your network constantly and responds before a small incident turns into a costly breach.