About Platinum Systems
Platinum Systems has provided managed IT and cybersecurity since 1997 and was founded in Kenosha, Wisconsin, so confirm its service area before relying on it for work in O'Fallon. It either handles a client's whole technology environment or works alongside an internal IT team. Security services include endpoint detection and response, DNS filtering, penetration testing and a managed security operations center. A dedicated vCIO and a Technology Alignment Manager guide strategy. Clients span manufacturing, professional services and nonprofit sectors, and some have stayed for over a decade. Rated 5.0 from one Google review.
Services and details
Managed IT services
YesManaged cybersecurity
YesCo-managed IT
YesIT planning (vCIO)
YesNamed industries
Yes
No information yet on 24/7 help desk, stated response time, on-site support, compliance support, backup and disaster recovery, microsoft 365 and cloud, flat-rate pricing, no long-term contract. The website did not say; call and ask.
Contact
- (888) 910-4407
- 2427 State Hwy K, O'Fallon, MO 63368
- Website
- View on Google Maps
Hours
- Monday
- 7:30AM-5PM
- Tuesday
- 7:30AM-5PM
- Wednesday
- 7:30AM-5PM
- Thursday
- 7:30AM-5PM
- Friday
- 7:30AM-5PM
- Saturday
- Closed
- Sunday
- Closed
Listing compiled from public sources on 2026-11-11. Report a correction or request removal. Back to managed IT providers in O'Fallon.