ENTERPRISE IT. SMALL BUSINESS BUILT. VETERAN OWNED.

Hi, I'm Mark Elmore — founder of Gateway Cornerstone Technologies and an IT professional with over 15 years of enterprise IT experience. I spent years inside large-scale IT operations and saw firsthand what small businesses were missing. The same systems protecting Fortune 500 companies, running their infrastructure, and securing their data were completely out of reach for small and mid-size organizations — priced out, over-engineered, or buried in jargon they shouldn't have to navigate alone. That gap is exactly why GCT exists.

YOUR IT PARTNER. NOT JUST A VENDOR.

Gateway Cornerstone Technologies is a veteran-owned managed service provider (MSP) based in the STL Metro East region, serving small and mid-size businesses across Illinois and the greater St. Louis area. We deliver enterprise-grade IT infrastructure, cybersecurity, and emerging AI services — fully tailored to organizations that don't have the budget or bandwidth for an in-house IT department. We don't do break/fix. We don't show up after something goes wrong and hand you an invoice. We operate as a true extension of your team — proactive, invested, and accountable — so that IT becomes a growth driver instead of a recurring headache.

A COMPLETE TECHNOLOGY ECOSYSTEM. ONE TRUSTED PARTNER.

Gateway Cornerstone Technologies is built around four core service pillars that cover every layer of your technology needs:

• IT Managed Services: From proactive network monitoring and 24/7 help desk support to cloud migration and virtual Chief Information Officer (vCIO) services, our managed IT program keeps your infrastructure stable, efficient, and aligned with your business goals. No downtime surprises. No mystery invoices. Zero surprises — ever.


• Cybersecurity: Cybersecurity isn't optional — it's operational. GCT provides comprehensive cybersecurity compliance, threat detection, and security assessments built to protect small businesses from the same threats targeting enterprise networks.


• Web Design & Development: Custom websites that not only look great but also drive results for your business. A great website isn't just an online presence. It's a handshake, a first impression, and your hardest-working team member — available 24/7


• AI Solutions: Artificial intelligence isn't just for tech giants. GCT helps small businesses identify, implement, and operationalize AI tools — from staff training and process automation to fully deployed AI agents that work around the clock. If your competitors are exploring AI, now is the time to move.

EXPERIENCE, INTEGRITY, PARTNERSHIP

There's no shortage of IT vendors but few IT partners. Here's what sets us apart:

• Veteran Discipline & Accountability: Military service isn't a tagline — it's a standard. Every engagement at GCT is met with the same precision, follow-through, and commitment to mission that defines military service. Your IT operations are treated with the same urgency and accountability as any mission-critical objective.


• Partnership Mentality: We don't just want to be your IT provider. We want to be your IT partner. That means investing in your success, aligning our services with your business goals, and being there for you — not just when things go wrong, but every step of the way.


• Enterprise Experience. Local Presence: With 15+ years working inside large-scale enterprise IT environments, our team has seen and solved problems that most local IT shops have never encountered. That experience is now available to businesses right here in the Metro East — without the enterprise price tag.


• Proactive by Design: Most IT problems are preventable. GCT's managed services model is built around catching issues before they become outages. 24/7 proactive monitoring means your team stays productive and your operations stay uninterrupted.


• Flat-Rate, Transparent Pricing: No surprise bills. No ambiguous hourly fees. Our clients know exactly what they're getting and exactly what they're paying — every month.

BUILT FOR SMALL BUSINESSES THAT MEAN BUSINESS

Gateway Cornerstone Technologies works with small and mid-size organizations across the STL Metro East and Illinois region — from professional services firms and healthcare practices to nonprofits, contractors, and retail operations. If you have between 5 and 100 employees and rely on technology to run your business, we were built for you.

We understand the specific challenges that come with running lean: limited IT budgets, no dedicated internal staff, compliance pressures, and a growing threat landscape. GCT turns those challenges into a manageable, optimized technology environment — so you can focus on the work that actually grows your business.

THE GCT STANDARD: ZERO SURPRISES

Every client relationship at Gateway Cornerstone Technologies is built on transparency, speed, and results. We don't lock you into complexity you don't need. We don't upsell for the sake of it. And we don't disappear between service calls.

What you get from Gateway Cornerstone Technologies:

• A dedicated point of contact who knows your environment
• Regular technology reviews aligned with your business roadmap
• Response times measured in minutes, not days
• Technology decisions made in your interest — always

READY TO SEE WHERE YOUR IT STANDS?

Our free IT Assessment gives you a clear, no-obligation look at your current technology environment — what's working, what's not, and what's putting your business at risk. No hard sell. No commitment. Just answers.

STOP MANAGING IT HEADACHES. START GROWING YOUR BUSINESS

Not sure where your IT stands? Our free, no-obligation IT Assessment gives you a clear picture of your current technology environment — and a roadmap to optimize it.