In-House IT vs. Managed IT: Real Cost Comparison for Marietta Businesses (2026)

In-House IT vs. Managed IT Cost in Marietta, GA: What Cobb County Businesses Actually Pay

Marietta businesses weighing an internal IT hire against a managed services contract usually undercount the true cost of keeping someone on staff. A mid-level IT administrator in Cobb County earns between $55,000 and $75,000 annually in base salary alone, and that figure excludes payroll taxes, benefits, PTO coverage, training, and the tools that person needs to do the job. COMNEXIA has been delivering managed IT services to metro Atlanta businesses from its Roswell, GA headquarters since 1991, and the comparison below reflects what we actually see when we onboard Marietta clients, not a marketing estimate.

The Real Cost Components of In-House IT in Marietta

When a Marietta business employs a single IT generalist, that employee is typically the only person who knows where configurations live, which vendor contracts are active, and how the backup was last tested. That single point of failure creates risk beyond salary cost. Add the licensing stack an internal hire requires, including Microsoft 365 admin tools, a remote monitoring platform, and endpoint security, and the per-seat overhead climbs before a ticket is ever opened. Vacation, turnover, and after-hours gaps are unbillable dead time a managed services contract covers by design.

What COMNEXIA's Managed IT Services Deliver in Marietta

COMNEXIA structures managed IT around a security-first service stack, meaning every engagement begins with hardening the environment before optimizing convenience. For Marietta clients, that translates into the following concrete deliverables:

• Remote Monitoring and Management (RMM): COMNEXIA deploys NinjaOne agents across every managed endpoint in your environment. Automated patch cycles run on a defined schedule, critical OS and third-party patches are pushed within 24 hours of release, and patch compliance is logged for every device in a monthly report you receive on a fixed date each month.
• Endpoint Detection and Response (EDR): SentinelOne EDR is installed on all managed workstations and servers. SentinelOne's Singularity platform uses behavioral AI to detect and isolate threats autonomously, not just flag them for a human to review hours later. This matters specifically in Marietta's mixed SMB and dealership market, where ransomware targeting automotive DMS platforms has increased.
• Identity and Access Controls: Microsoft Entra ID conditional access policies are configured to require compliant device status and multi-factor authentication before any user reaches cloud resources. Named-account privileged access is separated from day-to-day credentials so a compromised password does not yield administrative reach.
• Help Desk with Structured Ticketing: All support requests enter a tracked queue. No email-a-friend support, no undocumented verbal fixes. Tickets log the issue, the technician, the resolution step, and the time spent, giving Marietta business owners a searchable audit trail.
• Documented Onboarding: Every new client goes through a structured discovery that produces a written network map, a device inventory, and a credential vault entry for every managed asset. This documentation lives with COMNEXIA, not in the head of one employee who might give two weeks notice.
• Monthly Reporting: Each month Marietta clients receive a report covering patch status by device, open and closed ticket volume, endpoint health scores, and any flagged security events with a plain-language explanation of what happened and how it was handled.

Auto Dealerships in Marietta: FTC Safeguards Rule Compliance Is Not Optional

Cobb County has a significant automotive retail presence along Barrett Parkway and the US-41 corridor. Dealerships running CDK Global, Reynolds and Reynolds, or Dealertrack as their dealer management system carry specific obligations under the FTC Safeguards Rule (revised standards effective June 2023), which requires a written information security program, encryption of customer nonpublic personal information in transit and at rest, access controls, and annual penetration testing. COMNEXIA's managed IT engagement for dealerships maps directly to those requirements: Entra ID conditional access satisfies access control documentation, SentinelOne EDR logs satisfy the incident response monitoring requirement, and NinjaOne patch records provide the asset inventory the rule mandates. We do not sell compliance as a separate add-on because a properly configured managed IT environment should produce the evidence your compliance documentation needs as a byproduct of normal operations.

Why Proximity to Roswell Matters for Marietta Clients

COMNEXIA's headquarters in Roswell sits roughly 15 miles north of Marietta via GA-120. When a situation requires an on-site technician, that distance is a short dispatch, not a regional office claim on a landing page. Thirty-five years of continuous operation in the north metro Atlanta market means our technicians understand the building infrastructure common to Cobb County office parks and the connectivity options available from providers serving this corridor.

Start the Conversation About Your Marietta IT Environment

If your current IT setup depends on a single employee or a break-fix vendor with no documented process, the cost comparison usually resolves quickly once all variables are on the table. COMNEXIA will walk through your existing environment, identify gaps against the controls listed above, and give you a specific per-seat number, not a range. Call (877) 600-6550 to schedule a no-commitment assessment with a COMNEXIA engineer who works the Atlanta metro market daily.