Armonk · Harrison · Purchase

Managed IT services in Armonk & Harrison.

Every IT company within fifty miles claims this corridor. Our office is at 2900 Westchester Ave in Purchase, inside the town of Harrison. This is not a service area we drew on a map. It is the neighborhood.

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Purchase & Harrison

The corridor outside our window.

Purchase is a hamlet of Harrison. It packs more corporate weight than almost any square mile in the New York suburbs. PepsiCo and Mastercard are based here. SUNY Purchase and Manhattanville University anchor the academic side. And the office parks along Westchester Avenue, long known as the Platinum Mile, fill in the rest. For Harrison and Purchase, this is our home zip code. For Armonk, we are the next exit up the interstate.

Around those big names sits the layer nobody writes about. The accounting practices, law offices, consultancies, and family businesses. They sit along Halstead Avenue in downtown Harrison and tucked into the corporate parks. Firms of ten to a hundred people. Their clients, and their security expectations, are shaped by the enterprise neighbors next door.

That is what an IT relationship here looks like. When your biggest client is a global headquarters down the road, their vendor-risk team sets your bar. A twelve-person firm gets a forty-page security questionnaire. “We have antivirus” is not an answer. Our cyber-insurance renewal checklist lays out the controls that questionnaire, and your insurer, will look for.

Armonk

IBM’s hometown runs on small firms.

Armonk is known worldwide for one address. IBM has run its headquarters here for six decades. What outsiders miss is everything around it. The law and consulting practices. The wealth managers. The medical and dental offices. And the Main Street businesses that make up North Castle’s real local economy.

Working beside a global headquarters cuts two ways. It brings big-company clients, and big-company expectations. The firms here get judged against a high bar. Big companies with huge IT teams set it. A small firm cannot reach that bar alone. That gap is where an outside IT partner earns its keep.

The stakes

What firms in this corridor really deal with.

The pressures here are not abstract. And they are not the ones a retail shop in another county faces. Three patterns come up again and again between Halstead Avenue and Main Street.

Enterprise vendor-risk reviewsServe a Fortune 500 neighbor and their procurement team checks your security before the first invoice clears. The questionnaire does not shrink because your team is small.
Wealth management scrutinyAdvisory firms in Armonk and Purchase draw the same SEC and cyber-insurance attention. It matches their Greenwich peers over the border. Usually with smaller teams to answer it.
Ransomware against lean setupsA practice on Halstead Avenue holds more client data today than a far larger business did a decade ago. Often with the same one-person IT setup it had then. That mismatch is exactly the profile attackers prefer.
What we do here

Three ways PCI shows up in its own neighborhood.

Managed IT

The base your firm runs on. Watched, kept up, and quiet, managed from an office in the same corridor as yours.

Cybersecurity

The threats that really target firms your size: stolen logins, ransomware, the client questionnaire you cannot yet answer. Handled with a clear head and explained in plain words.

Technology Advisory

The advisor at your table. Someone who turns tech choices into revenue, risk, and operations your leadership can act on.
Where we work

The rest of the map.

For details on the areas around this corridor:

Westchester County

The county in full. How the four corners of Westchester differ, and why that matters to your risk.

White Plains

The business core next door. Courts, county government, corporate offices, and the professional firms between them.

Stamford & Greenwich

Over the state line. Armonk’s back-country neighbor and the financial corridor beyond it.
The real problem

You don’t have a support problem.

Slow support and stalled projects are not the real problem. They are the symptom. Underneath is almost always the same gap: no standard for how work gets done, and no strategy for what gets done next. That is the owner’s job to fix, not a junior tech’s. At PCI, that owner is Wayne, the CEO — he sets the strategy himself.

Straight answers

Straight answers to fair questions.

Who provides managed IT services in Armonk and Harrison, NY?

Armonk and Harrison are claimed by most of the national help desks and regional MSPs that cover Westchester. Performance Connectivity (PCI) is based inside the area, at 2900 Westchester Ave #105 in Purchase, within the town of Harrison. We have advised businesses in this corridor since 1997. Our practice is built around professional firms, advisory practices, and the companies that serve the corridor's corporate anchors.

Is Armonk close enough for on-site support from PCI?

Yes. This is our home ground. Armonk sits about eight miles north of our Purchase office, a straight run up I-684. And downtown Harrison is closer still. We work on-site here the way any business works in its own neighborhood. Everything that can be handled remotely is handled from the same office your account team sits in.

A corporate client sent us a security questionnaire — can PCI help us answer it?

Yes. And in this corridor it is one of the most common reasons firms call. When your client is a global headquarters down the road, their vendor-risk team sets your bar. And 'we have antivirus' will not clear it. We build the posture the questionnaire asks about, and we document it, so you can finish the review and keep the work.

Home turf

Our address is on this page for a reason.

Location pages are usually written from a distance. This one describes the corridor outside our own office. The same firm, the same owners, advising Westchester businesses from Purchase for coming up on three decades.

5.0 average across 15 Google reviews Read them on Google →

Est. 1997 · 2900 Westchester Ave #105, Purchase, NY 10577 · (914) 934-9775
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The IT firm around the corner should act like it.

No pitch. A straight read on where your technology stands, from an office in the neighborhood.

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30 Years — coming in 2027