If you’ve spent any time talking to a cybersecurity vendor lately, you’ve probably been buried under an avalanche of acronyms: EDR, NGAV, XDR, MDR, SOAR, SIEM, AV. And there will almost certainly be a new one by the time you finish reading this sentence.
Every vendor promises their particular flavor of letters will keep you safe. But before you can sort through the marketing, you need to answer a more basic question:
What do you actually have right now, and is it enough?
If you already know your EDR from your XDR and you’ve got a SOAR feeding your SIEM, this post isn’t for you. This is for the small or mid-sized business owner who’s wondering why they can’t just keep using the free Windows Defender that came with the computer.
So let’s answer that one question and skip the alphabet soup.
The Short Answer
At a minimum, every organization needs both an EDR (Endpoint Detection and Response) and an NGAV (Next-Generation Antivirus), or a single solution that includes both.
Windows Defender Free, by the way, is technically an NGAV. So you’re not starting from zero. You’re just starting from “not nearly enough.”
How They Compare
| Feature | Windows Defender (Free) | Next-Gen AV (NGAV) | EDR |
| Primary goal | Block and prevent | Block and prevent | Detect, investigate, and respond |
| Techniques | Signatures, heuristics, cloud lookups | Behavior-based AI, machine learning, IoC blocking | Deep telemetry, memory forensics, attack timeline mapping |
| Response | Quarantines or blocks files | Stops processes, alerts admin | Process isolation, remote remediation, script execution |
| Cost | Free (built-in) | Paid (or premium suite add-on) | Paid standalone or enterprise bundle |
The difference matters. NGAV stops what it can recognize as bad. EDR assumes something bad will eventually get through anyway, and it gives you the visibility to see it, understand it, and shut it down before it becomes a breach.
“Can I Just Upgrade My Microsoft Licensing?”
Yes, sort of. If you upgrade to a Microsoft license that includes Microsoft Defender for Endpoint (MDE), you get both NGAV and EDR functionality in one package. MDE is a genuinely excellent product and regularly tops the Gartner Magic Quadrant.
So you’re done, right? Just upgrade the license?
Not quite. Buying the software is the easy part. The harder questions are:
- Who configures it?
- Who watches it?
- Who responds when it screams in the middle of the night?
For most small businesses, the honest answer to all three is nobody. And that’s where things get expensive in a hurry.
Configuration Is Not Plug-and-Play
Initial MDE setup is fairly straightforward. The hard part is everything after that: configuring Attack Surface Reduction (ASR) rules, setting exclusions that don’t accidentally turn off half your protection, and managing cross-platform environments where Mac, Windows, and Linux all need different treatment.
Microsoft also has a habit of regularly changing and adding features that need to be reviewed and re-tuned. This isn’t something you can hand to your office manager and forget about.
Alerts Are Not the Same as Answers
Even more important: who gets the alerts, and what do they do with them?
Modern endpoint tools auto-remediate the vast majority of garden-variety threats. But the alerts that do surface to a human are often just a small piece of a much larger picture. Separating real signals from background noise, and knowing what a real signal actually means, requires experience most small businesses don’t have on staff.
An unattended EDR is, in some ways, worse than no EDR at all. It generates a paper trail of warnings nobody read.
So What Should You Actually Do?
There’s no single right answer. The right answer depends on your risk tolerance, your budget, and your appetite for managing this yourself. Here are three reasonable paths, from most robust to most hands-on.
Option 1: Fully Outsourced Endpoint Security
You hand the whole thing to a managed security provider. They configure, monitor, respond, and remediate in real time. They also keep up with vendor changes, tune the system as your environment evolves, and handle moves/adds/changes without nickel-and-diming you.
Typically billed per endpoint, this option gives you predictable costs and the lowest operational burden. It’s the right choice if you want endpoint security to be something you simply don’t think about.
Option 2: Outsourced Setup, Hourly Monitoring
A provider configures the system correctly up front, then bills hourly for ongoing monitoring and incident response.
This can be cheaper than Option 1 in a quiet month, and dramatically more expensive in a bad one. If an incident hits, the meter runs while the fire burns. Budget accordingly.
Option 3: Outsourced Setup, You Monitor
This works only if someone on your team genuinely has the bandwidth and the skill to review alerts and recognize unremediated threats. It’s still vastly better than relying on Windows Defender Free and hoping for the best.
If you go this route, two safeguards are essential:
- Schedule a monthly or quarterly paid configuration review to make sure the system is still healthy and properly tuned.
- Keep an MSP on retainer so you have someone to call the moment something goes wrong, because by then it’s already too late to start vendor shopping.
The Real Bottom Line
When your environment is clean, well-maintained, and properly secured to match your business’s actual risk profile, Options 2 and 3 can deliver real savings.
When it isn’t, those “savings” evaporate the moment something goes wrong.
There is no universally right answer here. There’s only the right answer for you, and the only way to find it is to do an honest risk calculation, ideally with a trusted partner who’s willing to walk through it with you.
And here’s a useful litmus test: a trustworthy MSP will never tell you there’s only one option. A trustworthy partner gives you choices, helps you budget against them, and guides you toward the level of security that actually fits your business, not the level that maximizes their invoice.
Where ArcLight Stands
Our service offerings aren’t built around what’s best for our bottom line. They’re built around what’s best for our clients. That’s why our first core value is:
Protect and Guide: We embrace our role as both shepherds and sheepdogs, leading with wisdom while fiercely protecting what matters most.
If you’re not sure what endpoint security you have today, what you’re missing, or which of the three options above makes sense for your business, we’re happy to walk through it with you. No pressure, no acronym soup.
Call ArcLight at (918) 270-6600 or reach out through algsys.com to start the conversation.
Brian Largent
Father to five, husband to one, founder, CEO, and all around swell fella (or so I'm told)
