Internal IT · Augmented · Not Replaced

Co-Managed IT ServicesBench depth, after-hours coverage, and security expertise that extends your internal IT team

Name: On-Site Technology
Price range: $$

Co-managed IT services extend your internal IT team without replacing it. You hired an IT Director to own strategy, vendor relationships, and end-user trust. You did not hire them to be on call at 2 a.m., chase patch backlogs, or stand up Microsoft Defender alone. OST co-managed IT pairs your internal lead with our engineering bench, 24/7 SOC, and project muscle. Regional on-site response across NJ, NY, PA, and FL; remote co-managed IT engagements available nationwide.

Scope My Co-Managed Engagement Call (973) 777-7227

NIST CSF 2.0 aligned24/7 SOC-backed coverageRemote nationwideOn-site NJ · NY · PA · FL

Talk to a Co-Managed IT Engineer

Tell us about your team, environment, and where the gaps are. We will respond with a scoped proposal. We typically reply within 4 business hours.

Your info stays with us. No resale.

Quick Answer

Co-managed IT services are a shared operating model where an internal IT lead keeps strategic control, vendor relationships, and end-user trust, while a managed service provider supplies 24/7 help desk overflow, an EDR and MDR security stack (SentinelOne plus a SOC), an RMM and PSA platform, project surge engineers, and tier-3 escalation. On-Site Technology delivers co-managed engagements aligned to NIST CSF 2.0 and CIS Controls v8, with on-site response across Northern NJ, the NYC metro, Pennsylvania, and South Florida, and fully remote engagements available across the United States.

25+ Years

Serving Mid-Market IT
Founded 2001

24×7

SOC-Backed Security
Coverage

10–500

User Range
We Serve

NJ · NY · PA · FL

On-Site Footprint
+ Remote Nationwide

What You Actually Get

Six Things Co-Managed IT Adds to Your Internal Team

Not a takeover. Not a bench rental. A defined set of capabilities your IT lead can route work into the moment they need it.

After-Hours & Weekend Coverage

Your team protects 8×5. Our SOC-backed help desk takes the queue overnight, weekends, and holidays so your IT Director is not the after-hours pager.

Security Bench Depth

SentinelOne EDR plus a 24×7 MDR analyst pool, Microsoft Defender tuning, Entra ID conditional access, and tier-3 incident response your internal team can escalate into.

Project Surge Capacity

Migrations, refreshes, M365 tenant work, network cutovers. We bring engineers when your roadmap outruns your headcount — without permanent hiring.

RMM, PSA & Tooling Stack

Shared ticketing, automated patching, asset inventory, and remote access tools your team logs into alongside ours. No tool sprawl, no per-seat licensing for you to procure.

Compliance Heavy-Lift

Evidence collection, gap analysis, and audit support for HIPAA, PCI DSS 4.0, CMMC 2.0, NIST 800-171, SOC 2, and NY DFS 23 NYCRR 500. Your IT lead drives the program; we do the documentation.

Vendor Management & Escalation

We sit on hold with the ISP, the SaaS vendor, and the warranty desk. Tickets are pre-triaged with logs attached so escalations get answered, not bounced.

Pick The Right Operating Model

Co-Managed IT vs Internal-Only IT

Most mid-market companies with an internal IT lead are not choosing between staying internal and a full outsource — they are deciding whether to keep going alone or add a co-managed partner. Here is how the two stack up across the dimensions IT Directors actually evaluate. (If you do not have an internal IT lead, our fully managed model is the better starting point.)

Dimension	Internal IT Only	Co-Managed IT · OST
Strategic control	Full — you own everything	Shared — you keep strategy & vendor choice
Hours of coverage	8×5 (your team’s hours)	8×5 from your team, 24×7 from us — combined
Help desk depth	1–3 generalists	Your tier-1 + our tier-2/3 overflow + 24/7 SOC
Security tooling	Whatever you can license & tune	SentinelOne EDR/MDR + Defender, Entra, Intune
Compliance lift	On your IT Director	We do evidence, your team owns scope & sign-off
Project surge	Constrained by headcount	Engineers on demand without permanent hires
On-site response	Yes if local; no if remote staff	Yes — NJ, NY, PA, FL HQ teams
Cost predictability	Salary + benefits + tools = lumpy	Flat per-user co-managed scope, project work scoped separately
Knowledge retention	Concentrated in 1–2 people — turnover risk	Distributed: your team owns institutional context, we own runbooks
Best fit	50+ users with one full-time IT generalist	50+ users with an internal IT lead who needs leverage

Recognize Yourself?

Four Situations Where Co-Managed IT Is the Right Move

If two or more of these read like a description of your team this quarter, co-managed IT is worth a conversation.

You have 1–2 IT staff and growing

A single IT lead cannot cover strategy, helpdesk, security, and projects.

✓Your IT Director is the single point of failure for after-hours incidents
✓Vacation, illness, or notice creates an immediate coverage gap
✓Hiring a second engineer takes 3–6 months and doubles fixed cost
✓You need an escalation path that does not depend on one person

Your IT lead is buried in tickets

Strategy, security, and roadmap work keep slipping behind the queue.

✓Your IT Director burns the week resetting passwords and triaging tickets
✓Security projects (MFA, EDR, conditional access) keep getting pushed
✓The roadmap has not been touched in two quarters
✓Burnout, retention, or turnover risk is on your radar

You are scaling faster than IT can hire

Headcount, locations, or M&A activity is outrunning IT capacity.

✓You added 30+ users this year or expect to next year
✓A new office opened and IT was the bottleneck day one
✓A merger, acquisition, or carve-out is on the calendar
✓Cloud migration, M365 consolidation, or SD-WAN in scope

You face a compliance deadline

CMMC, HIPAA, PCI DSS 4.0, SOC 2, or NY DFS is on the calendar.

✓You are pursuing CMMC 2.0 Level 2 certification for a DoD contract
✓A HIPAA, OCR, or PCI DSS 4.0 attestation is due
✓Auditor flagged gaps in evidence and access reviews
✓Cyber insurance underwriting requires controls you lack

Roles & Responsibilities

Co-Managed IT Roles: What Your Team Owns vs What OST Owns

The biggest objection to co-managed IT is the fear of erosion: that the MSP slowly takes over until your IT Director is a liaison. We write the lines explicitly during onboarding, and we revisit them every quarter.

Your Team Owns

✓

Strategy & Roadmap

You decide what the company needs from IT next quarter, next year, three years out.

✓

Vendor Relationships

Your team owns the calls with Microsoft, your ISP, your line-of-business SaaS vendors.

✓

Hiring & Team Structure

You hire your own internal staff. We complement, never replace.

✓

Business Decisions

Budget, scope, prioritization, and final say on architecture stay with you.

✓

End-User Trust

Your help desk relationship with employees stays intact. We are an extension, not a brand.

OST Owns

✓

After-Hours Help Desk Queue

Tickets opened nights, weekends, and holidays are triaged and resolved by our SOC-backed engineers.

✓

SentinelOne EDR & MDR

EDR deployment, tuning, and 24×7 analyst response. Microsoft Defender stack tuning where applicable.

✓

Patch Automation & RMM

Endpoint patching, scripted remediation, and asset visibility through our shared RMM platform.

✓

Project Surge Engineers

Migrations, network cutovers, M365 tenant work delivered with named engineers and a published timeline.

✓

Tier-3 Escalation

When your tier-2 hits a wall, our senior engineers take the ticket, document the fix, and brief your team.

The Toolkit We Bring

The Co-Managed IT Stack Your Team Logs Into Alongside Ours

A co-managed engagement is only useful if the tooling is shared. These are the platform categories your team gets visibility into from day one.

PSA & Ticketing Platform

A shared queue your tickets and ours route through. Your team sees every ticket we open, every note we add, every resolution — one source of truth.

RMM — Remote Monitoring & Management

Endpoint patching, monitoring agents, scripted remediation, and asset inventory. Your team gets read access to every dashboard from week one.

SentinelOne EDR + 24×7 MDR

SentinelOne agent deployment and policy tuning, plus our managed detection & response analyst pool watching alerts around the clock.

SIEM & Log Aggregation

Centralized event correlation, alerting, and retention. Audit-ready evidence collection for HIPAA, SOC 2, PCI DSS 4.0, and NIST 800-171 attestations.

Microsoft 365, Entra ID, Intune & Defender

Tenant administration, Entra conditional access, Intune device compliance, Defender for Endpoint and Defender for Cloud Apps. Your IT lead drives policy; we configure and tune.

Backup & Continuity Platform

Image-based backup, immutable copies, off-site replication, and tested restore runbooks. Backed by our BCDR practice and tabletop exercise program.

How We Onboard

From First Call to Co-Managed Go-Live in Five Steps

A clean handoff is what separates a partnership from a vendor relationship. Here is what the first 60 days look like.

Discovery & Gap Analysis

We meet with your IT lead, walk the environment, review the current security stack, and produce a written gap report against NIST CSF 2.0 and CIS Controls v8.

Joint Operating Agreement & RACI

We draft the engagement document together: which queue you own, which we own, escalation paths, on-call rotation, and the quarterly review cadence.

Tooling Integration

We deploy our PSA, RMM, EDR, and SIEM agents alongside your existing tools. Your team gets administrator access to every platform from day one.

Co-Managed Go-Live

After-hours queue routes to us, EDR alerts open SOC tickets, patch automation runs against your maintenance windows. Your IT Director runs the standup — we attend.

Quarterly Business Review

Every quarter we walk ticket trends, security posture, project roadmap, and the joint operating agreement. Adjust scope, sunset what does not work, plan what is next.

Pricing Without Surprise

What Shapes a Co-Managed IT Quote

Co-managed pricing is engagement-specific because no two internal IT teams need the same complement. Here are the four levers that move the number.

SLA Hours of Coverage

An 8×5 overflow engagement is one number. 24×7 SOC-backed coverage with on-call escalation is another. Most clients land in the middle: business-hours overflow plus 24×7 security monitoring.

User & Endpoint Count

Per-user pricing scales with seat count and endpoint mix (workstations, laptops, mobile, servers). Server-heavy environments and BYOD fleets carry different per-unit weights.

Security & Compliance Scope

EDR-only is one scope. EDR + MDR + SIEM + a CMMC, HIPAA, or PCI DSS 4.0 evidence program is another. We scope security separately so you can right-size against your regulator and your insurer.

On-Site Frequency

Remote-only co-managed is one rate. Scheduled on-site days (cabling assists, hardware swaps, in-person planning) for clients in NJ, NY, PA, FL get bundled into the engagement at a published cadence.

Pricing is engagement-specific. Tell us about your team and environment, and we will scope a quote against the four levers above.

Scope My Engagement →

Where We Deliver

On-Site in NJ, NY, PA & FL. Remote Co-Managed Nationwide.

Our HQ is in Northern NJ with a satellite office in South Florida. Engagements that need scheduled on-site presence are concentrated in the regional footprint below. Engagements that can run fully remote — and most modern co-managed engagements can — are available across the United States.

Northern NJ

Bergen, Essex, Passaic, Hudson, Morris, Union counties — HQ region with same-day on-site response

NYC Metro & Long Island

Manhattan, Brooklyn, Queens, Westchester, Nassau, Suffolk — scheduled on-site days

Pennsylvania

Eastern PA — Lehigh Valley, Bucks, Montgomery, Philadelphia metro

South Florida

Broward, Miami-Dade, Palm Beach — satellite office for FL clients

Remote Co-Managed — Available Nationwide

Most co-managed scope — help desk overflow, EDR/MDR, RMM, SIEM, M365 administration, project engineering — runs fully remote. We onboard remote-only clients across all 50 states.

Frequently Asked

Co-Managed IT — The Questions IT Directors Ask Us

Twelve answers in the same words your team would use them in. Each answer matches the FAQPage schema verbatim.

How is co-managed IT different from fully outsourced managed IT?

Fully outsourced managed IT replaces the internal team. Co-managed IT extends it. With co-managed, your IT Director keeps ownership of strategy, vendor relationships, and final architectural calls. We supply the bench: 24×7 help desk overflow, an EDR/MDR security stack, an RMM and PSA platform, project surge engineers, and tier-3 escalation. Most companies with 50+ users and at least one internal IT lead find co-managed cheaper to operate at maturity than either pure internal or pure outsource, because they only buy the gaps. Compare with our fully managed IT model.

Will OST take over my internal IT team or replace anyone?

No. The whole engagement is built around an explicit Joint Operating Agreement that documents what your team owns and what we own. We do not have a help desk brand we want your end users to see. We do not pitch your boss to outsource you. The model only works if your IT lead trusts that we are extending capacity, not erasing roles. We revisit the agreement every quarter.

Do you only serve businesses in NJ, NY, PA, and FL?

No. The regional footprint is where we deliver scheduled on-site presence (cabling assists, hardware swaps, in-person planning sessions, white-glove rollouts). The vast majority of co-managed scope — help desk overflow, EDR/MDR, SIEM, M365 administration, RMM patching, project engineering — runs fully remote. We onboard remote-only co-managed clients across the United States.

How much do co-managed IT services cost?

Co-managed pricing is engagement-specific because the model is built around your existing team. The four levers that move the number: SLA hours of coverage (8×5 overflow vs 24×7 SOC), user and endpoint count, security and compliance scope, and on-site frequency. Most engagements price per-user per-month for the recurring scope, with project work scoped separately. Use our calculator for a directional estimate, or request a scoped proposal.

What size company is co-managed IT a good fit for?

Our typical co-managed client has 50+ users and at least one full-time internal IT lead. Smaller companies usually do better with fully managed IT because they lack an internal anchor. Very large enterprises (typically 500+ users) often have a deep enough in-house bench that they only need project surge consulting rather than ongoing co-managed scope. The sweet spot is the mid-market: enough complexity to justify dedicated IT, not enough headcount to staff every specialty in-house.

How does the after-hours and weekend coverage actually work?

Tickets opened outside your defined business hours route to our SOC-backed help desk queue. Our engineers triage, attempt resolution, and escalate to on-call senior staff when needed. Your IT Director gets a morning summary of every ticket touched overnight, what was resolved, what is open, and what needs their input. EDR/MDR alerts route to our 24×7 SentinelOne analyst pool independent of the help desk queue.

What security and compliance frameworks do you support?

NIST CSF 2.0 and CIS Controls v8 are the baseline for every co-managed engagement. On the regulated side we support HIPAA, PCI DSS 4.0, CMMC 2.0 Level 2, NIST SP 800-171, SOC 2 Type II, and NY DFS 23 NYCRR 500. We do the evidence collection and gap remediation; your IT lead and your auditor own the scope and the attestation. More on the security side here; CMMC readiness here.

Do we have to use your tools, or can you work with what we already have?

Both, with a preference for shared tooling. The PSA, RMM, EDR, and SIEM platforms are non-negotiable because that is how we share visibility with your team. For everything else — backup software, M365 tenant config, network gear, identity provider — we work with what you have. We will recommend changes if a tool is causing risk or pain, but the call is yours.

Can we scale the engagement up or down as our needs change?

Yes. The Joint Operating Agreement is reviewed every quarter and amended when scope shifts. Common adjustments: adding 24×7 coverage during a CMMC certification push, adding project engineering hours during a migration, dropping security scope after an in-house SecOps hire. We do not lock you into seat counts you no longer need.

What happens to vendor relationships and licensing we already have?

They stay yours. Your Microsoft tenant, ISP contracts, line-of-business SaaS, hardware warranties — all under your name, paid by you, owned by you. We will sit on the support call with you and pre-triage tickets with logs attached, but we never insert ourselves between you and your vendors as the contract holder.

How fast can co-managed IT be stood up?

A typical onboarding runs 30 to 60 days from signed engagement to co-managed go-live. Discovery and Joint Operating Agreement take 2 to 3 weeks. Tooling integration runs in parallel for another 2 to 3 weeks. Compliance-heavy environments (CMMC, HIPAA) and large user counts extend the timeline. Urgent situations (sudden departure, breach, audit deadline) we accelerate.

What does the quarterly business review cover?

A 90-minute working session with your IT Director: ticket volume and resolution trend, security posture against NIST CSF 2.0, SentinelOne alert summary, project roadmap status, vendor escalations, and any adjustments to the Joint Operating Agreement. We come with data; you come with what changed in the business. The QBR is what keeps the engagement honest.

Pairs Well With

Co-Managed IT Sits Inside the OST Stack

A co-managed engagement is most effective when the surrounding services are healthy. These are the ones we most often pair it with.

Ready to Scope an Engagement?

Tell Us About Your Team and Environment

Share your user count, internal IT structure, security stack, and any compliance deadlines on the calendar. We will reply with a scoped proposal against the four pricing levers above. We typically respond within 4 business hours.