Managed IT Services in Greenville
NetSys runs IT for small and mid-sized businesses in Greenville: help desk, security, backups, Microsoft 365 and the network, for a flat monthly fee per user. We have run IT out of New York since 1998, and our engineers hold degrees in electrical and computer engineering. Greenville is served from Brooklyn, in the same Eastern time zone. Monitoring, help desk and remediation run remotely around the clock from Brooklyn. On-site commitments are arranged in advance and sized to the engagement. Most clients run between 10 and 75 seats, and every agreement is month to month.
The short answer
NetSys provides managed IT to businesses in Greenville: help desk with engineers on the line, 24/7 monitoring, patching, ThreatDown managed detection and response, Microsoft 365 and Intune administration, tested backups and vendor management, for a flat monthly fee per user. Delivery is remote-first from Brooklyn, and on-site commitments are arranged in advance and sized to the engagement, up to a dedicated engineer with a drive time generally under an hour where regular presence is part of the scope. Most clients run between 10 and 75 seats, and every agreement is month to month.
How managed IT is delivered in Greenville
Greenville is served from Brooklyn, in the same Eastern time zone. Monitoring, help desk and remediation run remotely around the clock from Brooklyn. On-site commitments outside the tri-state area are arranged in advance and sized to the engagement: a mostly remote engagement needs no dedicated on-site engineer, while an engagement that calls for regular presence, such as a standing on-site day or two each week, gets a dedicated engineer whose drive time is generally under an hour, depending on where that engineer and your office are. Hardware ships pre-configured, so most projects need no visit at all. The buildings decide a lot of the design. Downtown Greenville has carrier choice, but I-85 corridor plants and Greer supplier offices often run on one Spectrum circuit with the network closet on the shop floor, and OEM cybersecurity requirements arrive with the purchase order. The carriers we see most in Greenville are Spectrum Business, AT&T Business Fiber and Lumen, and the failover design starts with which of them actually reach your building.
Who managed IT in Greenville is built for
Most of our Greenville work sits in Downtown Greenville, Spartanburg, Simpsonville, Greer and the I-85 corridor: automotive and aerospace suppliers on Plex, medical practices on Epic, engineering and professional firms on Deltek, contractors on Procore, logistics companies along I-85 on Descartes, and nonprofits on Bloomerang. Each carries its own compliance load, which the section below covers, and each has a line-of-business vendor we coordinate with rather than work around. Companies with an internal IT person fit too; in that case we supply the monitoring, the security stack and the after-hours coverage behind them, and they keep their projects.
What tends to go wrong in Greenville
Two things shape the continuity design here. First, the weather and the grid: ice storms and hurricane remnants are the recurring outages, so UPS runtime and cellular failover are standard. Second, the attacks that actually land locally are ordinary ones, and the public record shows how they go: the 2012 breach of the South Carolina Department of Revenue, which exposed 3.6 million taxpayers' records from a single phished credential and remains the state's reference case. The controls in the next section are the ones that would have changed those stories.
Managed IT Services in Greenville: what NetSys delivers
Support that answers
- Help desk by phone, email and Teams with engineers on the line, an immediate response from your dedicated engineer when something severe happens, and everything else worked by severity
- Remote monitoring and management through NinjaOne on every endpoint and server, 24 hours a day
- Patch management on the maintenance schedule agreed with you, weekly or quarterly as the business prefers, with urgent fixes applied as needed and a report showing what was patched where
- Onboarding and offboarding checklists for every hire and departure, covering accounts, devices, access and the return of hardware
The security stack, included
- ThreatDown MDR and EDR on every workstation, laptop and server, monitored around the clock
- Entra ID Conditional Access, multifactor authentication and Microsoft Defender for Business across the tenant, with legacy authentication switched off
- Barracuda Email Protection with impersonation and link protection, plus DMARC enforcement for the domain
- Rapid7 InsightVM vulnerability scanning on a schedule, with findings fixed rather than filed
Continuity and planning
- Immutable backups for servers and for Microsoft 365 itself, tested by restoring real data on a schedule
- Intune, Windows Autopilot and Keeper password management rolled out as standard, so devices and credentials stop being ad hoc
- ISP, software and hardware vendors managed on your behalf, with one number to call
- Quarterly reviews with a written roadmap, a budget and a list of what changed since last time
A 35-person nonprofit in Downtown Greenville
The specific engagements behind this profile are under NDA, so it is written as a generalization rather than a named client. Our published, client-approved outcomes are in case studies.
A 35-seat nonprofits in Downtown Greenville that grew out of its setup: Bloomerang plus a dozen browser tools, an Exchange Online tenant with no multifactor authentication, a Meraki firewall out of support and a Lumen connection with no failover. The previous provider missed a failed backup for four months and nobody noticed until a file was needed. The owner has become the help desk and the office manager keeps the passwords in a spreadsheet.
- Credentials, licenses and documentation collected from the outgoing provider, and what was actually deployed audited against what was being paid for
- Microsoft 365 tenant review: dormant accounts closed, legacy authentication switched off, Entra ID Conditional Access and multifactor authentication applied to every user
- Intune enrollment for every laptop and phone, with Windows Autopilot registration for new hardware and a compliance policy that gates access to email and files
- Cisco Meraki firewall and switches configured with segmentation for servers, staff, printers and guests, and a cellular failover circuit
- Cutover in stages over three to four weeks, with the old provider's access removed at the end and no downtime during business hours
- NinjaOne RMM agents deployed to every workstation and server for 24/7 monitoring, patching and remote support
One provider is accountable for devices, network, Microsoft 365 and security. Staff call a help desk that fixes things, the insurer gets answers with evidence behind them, and leadership sees a quarterly roadmap instead of surprise invoices. The agreement runs month to month.
Complete managed IT, cybersecurity and help desk for a 20-seat organization
A 20-seat organization handed NetSys the whole of its IT. Devices, network, Microsoft 365 and vendors came under one agreement with 24/7 monitoring and a named account manager; endpoint protection, multifactor authentication, email protection and tested backups went onto all twenty seats; staff got a help desk with engineers on the other end; and every new hire now goes through a defined onboarding process with recurring phishing training. The write-up is limited to the scope delivered, with no outcome figures claimed.
Compliance in Greenville: S.C. Code § 39-1-90 and what sits on top of it
If you hold personal information on a resident of South Carolina, South Carolina's breach-notification statute (S.C. Code § 39-1-90) requires notice to affected residents without unreasonable delay after a breach, with notice to the Department of Consumer Affairs and the consumer reporting agencies when more than 1,000 residents are affected. The South Carolina Insurance Data Security Act separately requires insurance licensees to maintain a written information security program. Manufacturers, including the automotive and aerospace suppliers around Greenville and Charleston, face customer audits and CMMC 2.0, healthcare adds HIPAA, and port-related logistics firms answer to customer questionnaires. The managed agreement produces the evidence those rules ask for as a by-product: access reviews, patch reports, backup test results and a written incident response plan. Most firms we take over have none of it documented, which is the part that matters if you ever have to demonstrate compliance, so the documentation is built during onboarding rather than sold as a separate project.
What managed IT costs in Greenville
Managed IT is priced per user per month for a fully managed agreement, and the number moves with four things more than with headcount: how many servers you run, whether you need after-hours coverage beyond monitoring, how much compliance documentation you carry, and whether we are co-managing alongside an internal person or running everything. We quote from an assessment, not a phone call, and the agreement runs month to month. What belongs in the monthly fee versus what is billed separately is set out on our managed IT pricing page.
Who this fits, and who it does not
Best fit: 10 to 75 employees, one or two offices plus remote staff, already on Microsoft 365 or ready to move there, and either no internal IT or one person who is underwater.
Not a fit: businesses under five people, who are usually better served by the small-office baseline described in our five-person case study, or organizations over 250 seats, which need an internal team we can co-manage with rather than replace.
Read next
Industry pages: IT for Manufacturing · IT for Healthcare
Terms used on this page: Managed Service Provider (MSP) · Remote Monitoring and Management (RMM) · Patch Management
Guides: the questions to ask before signing with an MSP · what managed IT costs per user in 2026
Related pages
Read the full Managed IT Services service page. See all locations and service areas.
Also in Greenville: IT Consulting
Managed IT Services elsewhere: Atlanta · Charlotte · Nashville · Raleigh · Charleston · Louisville
Related services: Co-Managed IT · Managed IT Pricing & Scope · Switching Managed IT Providers · Outsourced IT Help Desk
Managed IT Services in Greenville: FAQs
Can you work with our existing IT person?
Yes. That is a co-managed arrangement: your person keeps the relationships and the day-to-day, and we take monitoring, security, patching and after-hours coverage, with the split written into the agreement. Our co-managed IT page describes how the responsibility matrix is drawn.
Do we have to sign a long contract?
No. Every NetSys agreement runs month to month, with no long-term contract and no early-exit penalty. The scope, the responsibilities on each side and the monthly figure are written down before you sign.
Is cybersecurity included or extra?
Included. Endpoint detection and response, multifactor authentication and Conditional Access, email protection, security awareness training and immutable backups are part of every managed agreement. The free external penetration test runs remotely before you hire us.
Do you have an office in Greenville?
Our office is in Brooklyn, NY. Greenville is served from Brooklyn, in the same Eastern time zone. Outside the tri-state area the on-site arrangement is agreed before the engagement starts and sized to what it needs: none for a mostly remote account, and a dedicated engineer, generally within an hour's drive, where regular presence such as a standing on-site day or two each week is part of the scope. The proposal states that arrangement, coverage hours and any travel in writing, and the agreement runs month to month.
What does South Carolina require after a data breach?
S.C. Code § 39-1-90 requires notice to affected residents without unreasonable delay, and more than 1,000 affected residents means the Department of Consumer Affairs and the consumer reporting agencies must be told. Insurance agencies also carry the state's Insurance Data Security Act.
Get the whole of your IT handled by one accountable team.
Tell us how many people and devices you have, what you run today and what keeps breaking. We come back with a written scope, the responsibilities on each side and a monthly figure, before you decide anything.