IT Consulting · Long Island

IT Consulting on Long Island: Assessments, Roadmaps and Projects

For Nassau and Suffolk organizations facing a decision bigger than a help desk ticket: a server that loses support in January 2027, a move to Microsoft 365 or Azure, a second office, a compliance deadline or a provider that stopped returning calls. NetSys engineers assess what you have, write the plan with costs and then carry out the projects.

All IT services in Long Island, NY

The short answer

NetSys provides IT consulting on Long Island: written assessments of your systems, accounts, network and vendors; technology roadmaps with costs; Microsoft 365, SharePoint and Azure migrations; server replacements; office moves and network designs; compliance readiness for HIPAA, NYDFS Part 500 or NIST SP 800-171; and virtual CIO reviews. Each project has milestones, change windows, acceptance checks and a handover. Nassau and western Suffolk are inside our on-site area, so engineers run walk-throughs, workshops and cutovers in person. Projects are quoted after scoping, and an ongoing managed agreement, if you want one, is a separate decision.

Service information by The NetSys Group. Our editorial standards.

How IT consulting engagements work on Long Island

An engagement starts with interviews, usually by video, with the owner, the office manager and whoever knows where the passwords are. Then an engineer visits each office, about 45 minutes from Park Slope to Garden City and an hour or more to Melville or Hauppauge, to inspect closets, servers, circuits and workstations, because a written assessment built only from questionnaires misses the server under the reception desk. Design reviews and progress meetings run remotely, and engineers return in person for workshops, cutover weekends and the final walk-through. Offices near Patchogue or Port Jefferson are 50 to 60 miles out, so we confirm drive time before booking those visits, and East End organizations work with us remotely, with equipment shipped pre-configured. Every engagement produces written deliverables you keep, whether or not you hire us for the work that follows. Assessment, design and integration work is coordinated from Brooklyn, with meetings and change windows stated in Eastern time. The project has agreed milestones, acceptance checks and a handover. Ongoing monitoring and help desk require a separately defined managed scope.

The 2027 server deadline and the computers left on Windows 10

Two Microsoft dates drive most consulting conversations on the Island right now. Windows 10 support ended on October 14, 2025, and Windows Server 2016 reaches the end of extended support on January 12, 2027. A Server 2016 machine often runs the file shares, the domain controller and one line-of-business application at once, such as the practice's EHR database, a manufacturer's ERP or an older tax program, so replacing it is a decision about each of those roles, not one purchase. We map every role, check what each software vendor supports, and compare three paths with costs: new on-premises hardware, a move to Azure, or retiring the server by moving files to SharePoint and identity to Entra ID. Working backward from January 2027, the plan sets dates for hardware orders, vendor upgrades and a cutover weekend that avoids your busy season.

Cloud migrations sized for Nassau and Suffolk offices

Most Long Island migrations are smaller than the word suggests, but they fail in the same places: permissions, bandwidth and the one application nobody mentioned. Before moving a file server to SharePoint and OneDrive we inventory every share, map who uses what, and redesign folders and permissions so they make sense in the cloud rather than copying a 2009 drive letter structure. We check the office's circuits, because an upload limit on a cable line can turn a weekend migration into a week; Optimum Business, Verizon Fios and Lightpath are the options to check at your address. Applications that must stay on Windows, such as some tax, accounting or engineering programs, can run on Azure Virtual Desktop so staff reach them from home or a Manhattan client site. Our published case study on moving an on-premises server to Azure and OneDrive to SharePoint shows the method; it is not a Long Island engagement.

Compliance projects: NYDFS, HIPAA and CMMC on Long Island

Consulting is often triggered by a regulator, an insurer or a customer questionnaire. Insurance agencies licensed by DFS have needed MFA for anyone accessing their information systems and a documented asset inventory since November 1, 2025, under 23 NYCRR Part 500. Medical groups need a current HIPAA Security Rule risk analysis whenever they open an office or change systems. Defense suppliers in Hauppauge and along Route 110 face a changed timeline: CMMC Phase 2 was suspended on July 13, 2026, a reform task force report due September 11, 2026 has not been released, and Level 1 and Level 2 self-assessments, SPRS scores, DFARS 252.204-7012 and NIST SP 800-171 Revision 2 still apply. Our work in each case is the same shape: map every requirement to a control, an owner and the evidence an assessor will ask for, then fix the gaps in priority order. This is general information, not legal advice.

Office moves, expansions and the network behind them

Long Island businesses move more often than they plan to: out of a Melville office park into a smaller hybrid suite, into a converted building on Franklin Avenue in Garden City, or into a second location in Suffolk to be closer to clients. The IT side of a move needs months, not days. We review the lease and floor plan before signing where we can, order the internet circuit early because the carrier sets the installation date, specify cabling, closet power and cooling, and design Wi-Fi from a survey of the empty space. Conference rooms, door access, cameras and phones are planned at the same time so contractors are not working against each other. The cutover is scheduled for a weekend, with a tested rollback, and on Monday morning an engineer is on site to fix the inevitable missing printer or monitor.

What is included

IT Consulting on Long Island: what NetSys delivers

Assessment and roadmap

A written assessment of every system, account, vendor and risk, produced from discovery rather than a questionnaire
A 12-to-36-month technology roadmap with costs, sequencing and the decisions that depend on each other

Projects, designed and run

Microsoft 365 and Azure migrations planned around identity first, with Entra ID, Conditional Access and Intune designed before data moves
Network and office designs: Cisco Meraki or Fortinet firewalls, segmentation, Wi-Fi and failover, specified before the fit-out starts

Ongoing advisory

Virtual CIO service: a quarterly review with leadership covering risk, spend, projects and what changed
IT due diligence for acquisitions, leases and vendor decisions, with findings in writing

Published case study

Large international food importer: the whole platform rebuilt in Azure

An extreme weather event knocked out power and connectivity to a food importer's building and cut a 120-person, three-warehouse business off from suppliers and clients worldwide for days. NetSys ran a two-week assessment of every workload with recovery objectives per system and a cost model comparing an on-premises refresh with Azure, designed a landing zone with hub-and-spoke networks and Entra ID Conditional Access, lifted the SQL environment to Azure SQL Managed Instance, rebuilt file shares on Azure Files, published applications through Azure Virtual Desktop, connected the warehouses by VPN, and layered Defender for Endpoint, Exchange Online Protection and immutable backups on top. The migration took ten weeks with a weekend cut-over.

Read the full case study (120+ employees · 3 warehouses)

From our client work

IT consulting work for other clients

Real estate
Commercial property management company
SharePoint migration of 800 GB of leases, vendor records, and property documents, with separate access permissions for 12 property teams.
SharePoint & OneDrive Migration IT for Real Estate and Property Management

Client names are withheld. These examples were chosen for the work involved, not for where the client is, so none is presented as a Long Island client.

What IT consulting costs in Long Island

Consulting is priced by the project or by the review rather than by the hour: an assessment has a fixed price based on the size of the environment, a migration is quoted from the workload inventory, and virtual CIO advisory is a monthly figure that scales with how many reviews and decisions a year you need. What moves the number is the number of systems and sites, the compliance standard in play and whether we are also managing the environment afterwards. Every quote is written from discovery, and the terms run month to month.

How the monthly fee is built

Who this fits, and who it does not

Best fit: 10 to 150 employees, a decision on the table that involves cloud, an office move, an acquisition, a compliance program or a system nobody trusts, and leadership that wants options with numbers rather than a sales deck.

IT Consulting on Long Island: FAQs

Do you provide on-site IT consulting on Long Island?

Yes, across Nassau County and western Suffolk. Engineers come on site for discovery walk-throughs, workshops with your staff, cutover weekends and post-project checks, while interviews, design reviews and progress meetings usually run by video. For offices near Patchogue and Port Jefferson we confirm drive time before scheduling, and East End organizations get the same engagement by video and screen share. Every engagement starts with discovery and ends with a written handover, so you know exactly what was found, changed and documented.

How is IT consulting priced on Long Island?

Assessments and projects are quoted after scoping, based on the size of the environment, the number of offices and systems involved, and the compliance standard in play, rather than billed as an open-ended hourly meter. A migration is quoted from the workload inventory, and an office move from the floor plan and equipment list. Virtual CIO reviews can sit inside a managed IT agreement or be scoped on their own. We never publish rates, because two 20-person firms can have very different environments.

What does an IT assessment include?

Every computer, server, network device, cloud service, account and vendor, recorded and checked. We review Microsoft 365 configuration and administrator access, backup coverage and whether restores actually work, patch levels and unsupported systems, firewall rules, Wi-Fi, circuits and the vendor contracts behind them. The report ranks findings by risk and business impact, estimates the cost and effort of each fix, and turns them into a roadmap for the next 12 to 24 months. It is written for owners, with a technical appendix for whoever does the work.

Should we replace our Windows Server 2016 machine or move to the cloud?

It depends on what the server does. If it mainly holds files and runs the domain, moving files to SharePoint and identity to Entra ID usually removes the need for a server at all. If it runs a line-of-business application whose vendor requires Windows Server, the choice is between new hardware in the office and a virtual machine in Azure, and the vendor's support terms often decide it. We price each path, including licensing and internet upgrades, and recommend one in writing. Extended support for Windows Server 2016 ends January 12, 2027.

Can you help us choose between Microsoft 365 and Google Workspace?

Yes. The answer depends on the applications your staff actually use, the security and compliance controls you need, and whether your clients or regulators expect one platform. We test three everyday tasks on both with your people, price the licenses on the same basis, include the migration effort and write up a recommendation. Professional firms whose line-of-business software expects Outlook and Windows usually land on Microsoft 365, but we have no reason to steer you either way.

Do we have to sign a managed services agreement to hire you for a project?

No. Assessments, migrations, office moves and compliance projects can be engaged on their own, with a fixed scope, milestones and a handover to your staff or current provider when the work is done. Some clients keep us on afterward for managed IT or virtual CIO reviews, and others do not; the project deliverables are yours either way. If you later want ongoing management, it is a separate month-to-month agreement with its own written scope.

Engineers, not a sales deck

Bring the decision you are stuck on.

A cloud move, a merger, a compliance deadline, a system nobody trusts. Tell us what you run and what has to change, and an engineer comes back with an assessment, options with real numbers and the order to do them in.

Explore IT Consulting Scope 845-203-3914