What is co-managed IT and how is it different from fully managed IT?

Co-managed IT is a model where an organization retains its internal IT staff and augments them with an outside partner — in Armorstack's case, 100+ technical experts across IT, security, and advisory disciplines. The internal team handles the domains it knows best; Armorstack fills gaps in coverage, compliance documentation, after-hours support, and specialized expertise. Fully managed IT transfers operational responsibility for the entire IT environment to Armorstack. Both models are permanent operating strategies, not interim arrangements, and both include the same security integration with Armorstack's SENTRY portfolio.

What is the Integration Tax and why does it matter for mid-market IT?

The Integration Tax is the hidden cost of running IT through multiple disconnected vendors — the staff hours spent coordinating between providers during incidents, the compliance gaps that fall between vendor scopes, the duplicate licensing for overlapping tools, and the delayed response times that result from no single vendor owning the full stack. For regulated mid-market organizations, those gaps carry real risk: audit findings, slower incident response, and security blind spots at the boundary between IT infrastructure and security monitoring. Armorstack eliminates the Integration Tax by delivering IT, security, physical security, and strategic advisory through a single integrated platform.

Does Armorstack CORE cover compliance requirements like HIPAA, CMMC, and GLBA?

Yes. CORE is designed specifically for regulated industries. For healthcare organizations, CORE supports HIPAA Security Rule technical safeguards including access controls, audit logging, and encryption, backed by business associate agreement compliance. For defense contractors, CORE operationalizes the technical controls required for CMMC 2.0 Level 2 — including access control, configuration management, and incident response — with VERITY's advisory layer mapping controls to the assessment process. Financial services clients benefit from the asset inventories, patching evidence, and access review logs required for GLBA Safeguards Rule and examination readiness. Compliance is built into the CORE operating model, not available as an add-on.

How does Armorstack integrate IT management with cybersecurity?

Armorstack operates four integrated portfolios: VERITY (strategic advisory), CORE (managed IT and infrastructure), SENTRY (cybersecurity and threat management), and CITADEL (physical security). CORE and SENTRY share the same telemetry, the same alert queue, and the same escalation path — meaning infrastructure events and security events are correlated in real time rather than compared after the fact by two separate vendors. When a threat crosses the boundary between an IT event and a security event, the response does not slow down to accommodate inter-vendor coordination. For organizations that also require physical security integration, CITADEL extends that coverage to access control and video surveillance under the same operating model.

What is the 90-Day Proof and how does it work?

The 90-Day Proof is Armorstack's no-long-term-contract engagement model. Organizations receive CORE managed IT services — including help desk, infrastructure management, security integration, and compliance support — for ninety days, measured against defined performance targets established at the start of the engagement. At the end of the period, the organization has documented operational evidence on which to base a long-term partnership decision. It is designed for IT leaders and executives who want proof before commitment, and it reflects Armorstack's confidence in the outcomes its model produces.

What types of organizations is Armorstack CORE built for?

CORE is purpose-built for regulated mid-market organizations — typically those between 100 and 2,500 employees operating in healthcare, financial services, manufacturing, defense contracting, or K-12 education and libraries. These organizations face compliance obligations (HIPAA, CMMC, GLBA, FERPA, E-Rate), audit requirements, and technology complexity that commodity IT providers are not equipped to address reliably. Armorstack serves clients across the United States, with operational depth across both IT-intensive and OT/IT converged environments.

CORE — Managed IT

Managed & Co-Managed IT Services for Regulated Mid-Market Organizations

Most mid-market companies carry a hidden tax on their IT spend — the cost of coordinating five or six vendors who were never designed to work together. Armorstack CORE eliminates that friction. One accountable partner. One integrated stack. 100+ technical experts operating across IT, security, physical safety, and strategic advisory — all under a single roof.

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What Is CORE Managed IT — and Why Does the Distinction Matter?

CORE is Armorstack’s IT-as-a-Service and infrastructure portfolio. It covers everything a regulated mid-market organization needs to operate a reliable, auditable, and scalable technology environment — from day-to-day help desk support to cloud migration, Microsoft 365 management, vendor consolidation, and strategic IT planning.
The term “managed IT services” is used widely, but what it means in practice varies enormously. Some providers offer little more than remote monitoring and a ticket queue. CORE is built differently: it is a fully accountable operating model backed by 100+ technical experts, governed by defined service levels, and integrated with Armorstack’s security (SENTRY), advisory (VERITY), and physical security (CITADEL) portfolios. You are not buying a help desk. You are replacing a fragmented vendor stack with a single intelligent operations partner.
Armorstack is a Managed Intelligence Provider — not a commodity IT shop. That distinction shapes how CORE is designed: proactive over reactive, evidence-based over anecdotal, and converged across IT and security rather than siloed by department.

Co-Managed IT Is a First-Class Option, Not a Compromise

Many organizations come to us with a capable internal IT person or small team that is simply overloaded — covering too many systems, too many compliance requirements, and too many locations without adequate backup. Co-managed IT is the right model for those organizations. It is not a stepping stone to full outsourcing. It is a permanent, deliberate operating model that puts Armorstack’s depth of expertise behind your existing team.
Choosing between co-managed and fully managed is one of the most consequential IT decisions a mid-market CIO or operations leader will make. We built a dedicated resource to help: compare co-managed vs. fully managed IT services in depth. The short version is below.

Co-Managed vs. Fully Managed IT — Decision Framework
Factor	Co-Managed IT	Fully Managed IT
Internal IT team exists?	Yes — augmented by Armorstack	No — or fully transitioned to Armorstack
Control over daily operations	Shared — internal team retains ownership of chosen domains	Armorstack-led — with full transparency and reporting
Best for	Organizations with institutional IT knowledge they want to preserve	Organizations ready to offload IT operations entirely
Compliance coverage	Full — Armorstack fills gaps, documents controls	Full — Armorstack owns compliance evidence gathering
Security integration	SENTRY layers over co-managed environment	SENTRY fully integrated from day one
Scalability	Scales with internal headcount changes	Scales with business growth automatically
Typical profile	Healthcare system, manufacturer with legacy OT, financial services firm	Growth-stage company, acquisition integration, post-incident rebuild

Not sure which model fits your situation? The full comparison guide walks through the decision criteria by industry and organizational profile. For transparency on investment, see our managed IT services pricing overview.

The Integration Tax: Why “One Vendor Beats Six”

Mid-market IT environments commonly involve five to eight vendors: one for endpoints, one for networking, one for cloud, one for backup, one for security, and one (or more) for help desk support. Each relationship carries its own contract, its own renewal cycle, its own support queue, and its own finger-pointing dynamic when something goes wrong across the seam between two products that were never designed to interoperate.
We call the aggregate cost of this fragmentation the Integration Tax. It is not a line item on your invoice. It is the accumulated burden of:

Internal staff hours spent coordinating between vendors during incidents
Delayed resolution times because no single vendor owns the full stack
Duplicate licensing for tools that overlap in functionality
Compliance gaps that fall through the cracks between vendor scopes
Security blind spots at the boundary between IT infrastructure and security monitoring

The vendor consolidation case is straightforward: when one accountable partner manages the full stack — IT infrastructure, security operations, and physical systems — incidents resolve faster, compliance evidence is cleaner, and the organizational overhead of managing vendor relationships collapses. One vendor beats six. Not because consolidation is trendy, but because integration at the platform level produces measurably better outcomes than coordination at the contract level.
Armorstack CORE is engineered specifically to eliminate the Integration Tax for regulated mid-market organizations. Every CORE engagement is backed by SENTRY’s security operations capability, meaning your IT provider and your security provider share the same telemetry, the same alert queue, and the same escalation path. The seam that attackers exploit in fragmented environments simply does not exist in our architecture.
Read the detailed breakdown: What Is the Integration Tax and What Does It Cost Your Organization?

Built for Regulated Mid-Market — Not Adapted for It

Generic managed IT services are designed for the average business. Regulated mid-market organizations are not average. A regional hospital, a defense subcontractor, a wealth management firm, or a precision manufacturer each operates under frameworks — HIPAA, CMMC 2.0, GLBA, NIST 800-82 — that impose specific technical controls, documentation requirements, and audit obligations that a commodity IT provider cannot reliably satisfy.
CORE is purpose-built for the industries where those obligations are real and where the cost of an IT failure is measured not just in downtime but in regulatory exposure, patient risk, or contract loss.

Healthcare

Electronic health record environments demand uptime, data integrity, and HIPAA-aligned access controls that go far beyond standard IT management. CORE’s managed IT for healthcare practice covers EHR infrastructure support, endpoint protection aligned with HIPAA Security Rule requirements, business associate agreement (BAA) compliance, and seamless escalation to SENTRY’s managed detection and response capability when a security event affects clinical systems.

Financial Services

GLBA Safeguards Rule, PCI-DSS, and examination readiness require that IT controls be documented, tested, and auditable on demand. CORE provides the infrastructure discipline that makes that documentation possible — clean asset inventories, patching evidence, access review logs, and change management records that satisfy both internal audit and external examiners.

Manufacturing

The convergence of operational technology (OT) and information technology (IT) is the defining IT challenge in modern manufacturing. CORE’s managed IT for manufacturers practice addresses both environments — securing the plant floor alongside the corporate network, with SENTRY providing continuous monitoring across the OT/IT boundary. CITADEL extends that coverage to physical access control and video systems, completing the converged security picture.

Defense Contractors

CMMC 2.0 compliance is not optional for organizations seeking or holding Department of Defense contracts. Armorstack’s CMMC practice is built on CORE’s infrastructure foundation — the technical controls required for CMMC Level 2 (access control, audit logging, configuration management, incident response, media protection) are operationalized through the CORE managed IT model, not bolted on as an afterthought. VERITY’s advisory layer then maps those controls to the assessment process.

K-12 Education and Libraries

E-Rate-funded networks, CIPA-mandated content filtering, and FERPA data governance requirements make K-12 IT environments more complex than they appear from the outside. CORE supports school districts and library systems with network management, device lifecycle, help desk, and the security monitoring required to protect student data — all aligned with federal program eligibility requirements.

What CORE Managed IT Includes

CORE is a platform, not a menu of add-ons. The capabilities below are integrated — each one informed by the others — rather than purchased and managed separately.

Help Desk and End-User Support

Responsive, knowledgeable IT help desk services staffed by engineers who understand regulated environments. No offshore tier-one scripts. No “have you tried turning it off and on again” dead ends. Issues get routed to the right expertise the first time, with defined response and resolution standards.

Infrastructure Management

Server, network, storage, and endpoint management with proactive monitoring, patch governance, and change management discipline. Configuration drift, unpatched systems, and undocumented changes are the root cause of most IT failures in mid-market organizations. CORE eliminates those failure modes systematically.

Cloud Services and Migration

Whether your organization is beginning its cloud journey or optimizing an existing multi-cloud environment, CORE’s cloud migration services provide a structured path that preserves data integrity, maintains compliance controls, and avoids the cost overruns that plague unplanned migrations. For organizations running VMware environments affected by the Broadcom acquisition, our VMware to Broadcom migration planning practice offers a clear transition roadmap.

Microsoft 365 Management

M365 is not a set-and-forget platform. Misconfigured tenants are one of the leading sources of data exposure in mid-market organizations. Armorstack’s Microsoft 365 management covers tenant hardening, conditional access policies, license optimization, Exchange and Teams governance, and integration with SENTRY’s identity monitoring for anomalous authentication detection.

Vendor and Contract Consolidation

CORE includes proactive vendor consolidation analysis — mapping your current vendor landscape, identifying overlap and gaps, and building a rationalization plan that reduces the Integration Tax without disrupting operations. Most organizations discover meaningful savings within the first year of consolidation, not from renegotiating rates, but from eliminating redundancy and the overhead cost of managing too many relationships. For a deeper look at the financial case, see our IT cost reduction analysis guide.

IT Cost Reduction and Financial Discipline

Technology spend in mid-market organizations frequently grows faster than the value it delivers — licensing that outlasted its use case, infrastructure sized for a growth trajectory that changed, and support contracts on systems that should have been retired. CORE’s financial discipline practice brings the same rigor to IT spend that a CFO applies to operational costs. See our IT cost reduction resource for the framework we apply.

The Four-Portfolio Advantage: IT That Is Already Integrated with Security

The most consequential limitation of a standalone managed IT provider is that IT and security remain separate programs. Your infrastructure team and your security team operate on different tools, different alert queues, and different escalation paths. When a threat crosses the boundary — a compromised endpoint triggers a lateral movement event, or a cloud misconfiguration exposes sensitive data — the response slows to the speed of inter-vendor coordination.
Armorstack eliminates that boundary by design. CORE is one of four integrated portfolios:

VERITY — Strategic advisory: vCIO and vCISO services, IT roadmapping, NIST and CMMC governance, board-level risk reporting, and AI risk assessment. VERITY ensures that CORE’s operational decisions are aligned with organizational strategy and compliance objectives.
CORE — IT-as-a-Service and infrastructure: everything described on this page.
SENTRY — Cybersecurity and threat management: SOC, SIEM, managed detection and response (MDR), penetration testing, dark web monitoring, and SENTRY Pulse continuous observability. SENTRY shares telemetry with CORE, meaning infrastructure events and security events are correlated in real time rather than compared after the fact.
CITADEL — Physical security and integration: access control, video surveillance, AI-powered physical analytics, and the cyber-physical convergence that regulated industries increasingly require. A threat that enters through a physical vector — an unauthorized person in a server room, a compromised badge reader — is visible to the same operations team monitoring the IT and security environment.

This is the converged model that mid-market regulated organizations need and that the vendor landscape has historically failed to deliver at a price point and service level appropriate for organizations below the enterprise tier. Armorstack was built to close that gap.

Single-Vendor Converged Model vs. Multi-Vendor Fragmented Stack
Dimension	Armorstack (Converged)	Fragmented Multi-Vendor Stack
Incident response coordination	Single escalation path, shared context	Multi-vendor war room, delayed resolution
Compliance evidence	Unified audit log across IT and security	Separate evidence packages from separate vendors
Threat visibility	IT + security + physical telemetry correlated in real time	Siloed dashboards, manual correlation
Accountability	One contract, one point of accountability	Contractual gaps between vendor scopes
Licensing overhead	Rationalized stack, no redundant tooling	Overlapping tools, duplicate spend
Strategic alignment	VERITY advisory ensures IT serves business objectives	Tactical vendor relationships, no strategic layer
Physical security integration	CITADEL integrated at the platform level	Separate physical security vendor, no data sharing

How Regulated Mid-Market Organizations Engage with CORE

Every CORE engagement begins with a structured discovery process — not a canned assessment template, but a working session designed to map your current environment, identify the gaps that carry the most operational and compliance risk, and build a transition plan that does not disrupt your business while it is happening.
We do not require long-term commitments to prove that the model works. Our 90-Day Proof program is designed for organizations that want to evaluate a Managed Intelligence Provider against real operational outcomes before making a multi-year commitment. Ninety days of CORE services — measured against defined performance targets — gives your leadership team the evidence it needs to make a confident, data-backed decision.

For Organizations with an Internal IT Team

If you have internal IT staff who are stretched across too many priorities, the co-managed IT model is the right starting point. Your team retains ownership of the domains they know best. Armorstack fills the gaps — after-hours coverage, specialized security expertise, compliance documentation, and strategic planning capacity that a small internal team cannot sustain alone.

For Organizations Ready to Transition Fully

Full managed IT is appropriate for organizations that want to move technology operations entirely off their plate — typically companies that have outgrown a reactive IT model, are integrating an acquisition, or are rebuilding after an incident. CORE’s fully managed model provides complete operational accountability with the transparency of a co-managed engagement: you see everything, you are consulted on every significant decision, and you retain strategic control while we handle execution.

Next Steps

Review our managed IT services pricing overview to understand how CORE engagements are structured. Then take the first step: the 90-Day Proof is available now, with no long-term contract required.

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