For years, endpoint security was fairly easy to explain: install a strong security agent on every computer, keep it updated, and let it stop bad things.
That job still matters. It is just no longer the whole job.
A modern cyberattack may begin with a phishing email, a stolen Microsoft 365 account, a vulnerable application, an exposed device, or a security setting that was never configured correctly. When each security layer operates in its own system, we see fragments of the attack instead of the full story.
We may know that something malicious happened on a computer, but not immediately see how it arrived, which user account was involved, what other devices are exposed, or whether the same threat is sitting inside an email inbox somewhere else.
That is why Microsoft Defender represents the next major step in the Makios cybersecurity strategy for 2026 and beyond.
Makios is beginning a deliberate, phased transition away from SentinelOne for appropriate clients. This is not because SentinelOne suddenly became a bad product. It did not. This is an architectural decision based on where our clients are going, where the Microsoft security platform is going, and how Makios intends to manage cybersecurity moving forward.
Why Is Makios Moving Toward Microsoft Defender?
The direct answer is that Microsoft Defender is becoming a better strategic fit for the environments we already manage.
Most Makios clients rely heavily on Microsoft 365 for email, identity, collaboration, user authentication, device access, and increasingly, device management. Microsoft Defender allows endpoint security to become part of that broader Microsoft security architecture instead of remaining another isolated security agent with its own alerts, policies, reporting, and management process.
That does not mean Microsoft Defender is automatically better in every possible environment. Security products do not become effective simply because they have a familiar logo on them. A poorly configured Microsoft Defender environment is still poorly configured.
The value comes from how the platform is licensed, configured, monitored, integrated, and managed.
For Makios, the strategic opportunity is to bring endpoint security, Microsoft 365 security, identity protection, email protection, device management, and vulnerability visibility closer together. That creates fewer disconnected systems and gives us better context when something goes wrong.
SentinelOne has served an important role in the Makios security stack. This is not a dramatic breakup. We are not throwing everything out on a Friday afternoon and hoping Monday goes well.
We are making a controlled shift toward a platform that better aligns with the Microsoft-centered environments our clients already use.
What Is Microsoft Defender for Business?
Microsoft Defender for Business is Microsoft’s endpoint security platform designed for small and midsized businesses with up to 300 users. It is available as a standalone product and is also included with Microsoft 365 Business Premium.
Learn more about Microsoft Defender for Business
This is not simply the basic antivirus icon that comes with Windows.
Defender for Business includes next-generation antivirus and anti-malware protection, endpoint detection and response, attack-surface reduction, automated investigation and remediation, automatic attack disruption, centralized management, threat analytics, and core vulnerability-management capabilities.
Endpoint detection and response, commonly called EDR, is the part of the platform that looks for suspicious behavior on a device, not just known malicious files. It can help identify activity such as unusual processes, unauthorized scripts, ransomware behavior, credential theft attempts, and other signs that an attacker may already be operating inside a system.
Attack-surface reduction is about making devices more difficult to exploit in the first place. Microsoft Defender for Business can use technologies such as attack-surface reduction rules, controlled folder access, firewall protection, network protection, and web protection to restrict common techniques attackers use.
Learn more about attack-surface reduction in Defender for Business
When a threat is detected, Defender can also support response actions such as quarantining a file, killing a malicious process, removing a scheduled task, running an antivirus scan, blocking an indicator, containing a device, or isolating a device from the network. Some actions can occur automatically, while others can be reviewed and approved by the security team.
Learn more about investigation and remediation actions
That is a meaningful step beyond traditional antivirus.
Traditional antivirus asks, “Is this file bad?”
A modern endpoint security platform also asks, “What happened, what else was affected, how far did it get, and what can we do about it right now?”
The Bigger Advantage Is the Microsoft Security Ecosystem
The endpoint agent matters, but the larger strategic value is how Microsoft Defender can participate in a connected security platform.
Microsoft Defender XDR is Microsoft’s cross-product security layer. It can coordinate detection, investigation, prevention, and response across endpoints, user identities, email, applications, and other Microsoft security services. It can combine related alerts into incidents and help security teams understand how an attack entered the environment, what it touched, and what actions were taken.
Learn more about Microsoft Defender XDR
That does not mean every Microsoft 365 license includes every Defender XDR capability.
Microsoft Defender XDR correlates information from the Microsoft security products an organization has actually licensed and provisioned.
This distinction matters.
Microsoft Defender for Business is the endpoint-security component. Microsoft Defender for Office 365 protects email and collaboration. Microsoft Defender for Identity focuses on identity-related threats. Microsoft Defender for Cloud Apps adds visibility and controls around cloud applications. Microsoft Defender XDR is the layer that can connect information across those products when the required services are present.
Microsoft 365 Business Premium already puts several important pieces into the same ecosystem. It includes Defender for Business, Defender for Office 365 Plan 1, Microsoft Intune Plan 1, and Microsoft Entra ID Plan 1.
Review the Microsoft 365 Business Premium security overview
It does not include every advanced Microsoft security product, but it creates a stronger foundation than managing endpoint protection, identity, email security, and device policies as completely separate islands.
When security systems can share context, the conversation changes.
Instead of receiving one alert about a suspicious email, another alert about a user account, and a third alert about a computer, the platform can potentially connect those events into one incident.
That gives us a much better question to answer:
“What is happening to this client?”
Not just:
“What happened on this one computer?”
Vulnerability Monitoring Is the Most Important New Opportunity
The biggest new opportunity for Makios is not simply replacing one endpoint security agent with another.
It is vulnerability monitoring.
Microsoft Defender for Business includes a vulnerability-management dashboard that can provide an exposure score, security recommendations, information about exposed devices, remediation activity, software inventories, identified weaknesses, and a timeline of vulnerabilities affecting the organization.
Learn more about the Defender for Business vulnerability-management dashboard
In practical terms, this can help us see:
- Which applications and operating systems are installed
- Which devices may be exposed to known vulnerabilities
- Which security configurations need attention
- Which software is outdated or unsupported
- Which recommendations may reduce the most risk
- Which remediation activities have been started or completed
That gives Makios a more consistent way to understand exposure across a client environment.
In the past, endpoint security was primarily about detecting malicious activity. Vulnerability monitoring adds another dimension. It helps identify weaknesses before an attacker successfully uses them.
That difference matters.
An alert tells us something may already be happening.
Vulnerability information tells us what could happen if we leave a weakness unaddressed.
Neither replaces the other. We need both.
Is Vulnerability Monitoring the Same as Vulnerability Management?
No.
This is one of the most important distinctions in the entire conversation.
A dashboard full of vulnerabilities does not mean the vulnerabilities have been managed. It means they have been identified.
That is useful, but identification is only the beginning.
A vulnerability-management program must still determine whether the finding is accurate, whether the affected system is still in service, whether the vulnerability is exposed in a meaningful way, how critical that system is to the business, whether a patch is available, and whether applying that patch could disrupt an important application.
The system might tell us that 40 computers have a vulnerable version of a particular application.
It cannot automatically decide whether that vulnerability poses a material risk to that specific client, whether the software can be removed, whether an update must be tested first, or whether the client needs to accept the risk temporarily because the application is required for business operations.
That requires human review, technical judgment, documentation, coordination, and accountability.
A real managed Vulnerability Management service must include several ongoing activities:
- Review and validate the findings
- Separate meaningful exposure from noise
- Prioritize vulnerabilities based on risk, business importance, exploitability, and affected systems
- Coordinate patches, software upgrades, removals, or configuration changes
- Document accepted risks and exceptions
- Verify whether remediation was successful
- Report measurable progress over time
The platform provides the visibility. The managed service turns that visibility into action.
That is the opportunity we see for Makios.
We are not interested in handing clients another automated report filled with hundreds of technical findings and wishing them luck. That is not vulnerability management. That is a PDF delivery service.
The goal is to help clients understand what matters, what needs to be addressed first, what can wait, what has been resolved, and what risk remains.
Not Every Microsoft Defender License Is the Same
Microsoft’s product naming can become confusing quickly, so the differences need to be stated clearly.
Microsoft Defender for Business
Defender for Business is the primary product Makios is evaluating for clients using Microsoft 365 Business Premium. It is designed for organizations with up to 300 users and includes core endpoint-security and vulnerability-management capabilities.
It is the practical starting point for many small and midsized businesses.
Microsoft Defender for Endpoint Plan 2
Defender for Endpoint Plan 2 is a more advanced endpoint-security tier. Microsoft positions Defender for Business as including all Defender for Endpoint Plan 1 features, selected Plan 2 capabilities, and some SMB-focused features.
Plan 2 adds deeper enterprise capabilities related to hunting, data retention, threat expertise, and advanced security operations.
Some clients may eventually require that higher level of capability. That decision should be based on actual security and operational requirements, not because “Plan 2” sounds more impressive on a proposal.
Microsoft Defender XDR
Microsoft Defender XDR is the integrated investigation and response experience that brings information together from licensed Microsoft security products.
It is not simply another name for Defender for Business, and it is not a promise that every security signal will automatically be available under every Microsoft 365 plan.
The amount of visibility and correlation available depends on which endpoint, email, identity, cloud-app, and security services have been licensed and configured.
Microsoft Defender Vulnerability Management
Defender for Business includes core vulnerability-management capabilities, but Microsoft also offers more advanced Defender Vulnerability Management capabilities through separate licensing paths.
Premium functions can include items such as security-baseline assessments, browser-extension assessments, digital-certificate assessments, network-share analysis, and hardware and firmware assessments.
Microsoft’s current documentation states that the separate Defender Vulnerability Management offering is not presently available directly to Defender for Business customers, so clients requiring that advanced layer may need a different Defender plan or licensing configuration.
Review Microsoft Defender Vulnerability Management capabilities
This is exactly why licensing must be assessed before anyone promises a particular feature.
“Microsoft Defender” is not one universal package. The name covers several related products, plans, and capabilities.
What Will the Transition Look Like?
Makios will treat this as an operational migration, not a product swap.
We must first confirm the client’s Microsoft licensing, device inventory, operating systems, server requirements, security needs, and management model.
Windows and Linux servers require separate Defender licensing, even when the client already has Microsoft 365 Business Premium.
Review the Microsoft Defender for Business licensing FAQ
From there, we must establish the appropriate security baseline, configure policies, review exclusions, prepare device groups, confirm alerting and reporting, and determine how the environment will be managed.
Devices should then be onboarded through a controlled process.
Makios must validate that devices are reporting correctly, security policies are applying, alerts are reaching the right systems, automated investigation is functioning, vulnerability data is populating, and response actions are available.
Only after the new platform has been validated should the previous endpoint platform be removed.
Running two security tools without a clear coexistence plan is not “extra secure.” It is a good way to create policy conflicts, performance problems, incomplete reporting, and a very long afternoon.
Some clients will transition sooner than others. Some environments will require additional preparation. Some may need different licensing. Some may remain on SentinelOne longer because Defender is not yet the appropriate fit.
That is fine.
The goal is not to claim that every client must use the same tool on the same day.
The goal is to build a defined Makios security standard and move clients toward it responsibly.
What Does This Mean for Makios Clients?
For clients, the potential value is straightforward.
There should be fewer disconnected security products to manage.
There should be better context around how an incident moves between email, identity, devices, and cloud services.
There should be clearer visibility into outdated applications, exposed systems, security misconfigurations, and remediation priorities.
There should be stronger reporting around what was discovered, what was addressed, what remains open, and what risk has been accepted.
There should also be a clearer path for the security program to mature.
A smaller organization may begin with Microsoft 365 Business Premium and Defender for Business. As its regulatory requirements, risk profile, insurance requirements, or internal security needs increase, additional Defender services can be evaluated without rebuilding the entire security architecture from scratch.
That is the strategic advantage.
We are not only selecting an endpoint-security product for today. We are establishing a platform that can support the managed cybersecurity services Makios intends to provide in the years ahead.
Is Microsoft Defender Right for Every Organization?
No.
Some organizations have licensing requirements, technical environments, regulatory obligations, operating systems, internal security teams, or existing investments that may make another platform more appropriate.
Some clients may need advanced threat hunting, longer data retention, more extensive identity monitoring, broader cloud-app visibility, or premium vulnerability-management capabilities.
Others may not yet have the Microsoft 365 licensing or device standards required to make the transition practical.
Makios should not force Microsoft Defender into an environment simply because it is our strategic direction.
Our responsibility is to determine whether it is the right fit, configure it correctly, manage it properly, and be honest when another option makes more sense.
The Bottom Line
The move toward Microsoft Defender is not simply about replacing SentinelOne with another endpoint-security product.
It is about changing the way endpoint security fits into the larger Makios cybersecurity strategy.
Microsoft Defender gives us the opportunity to connect endpoint protection more closely with Microsoft 365 security, identity, email, device management, incident response, and vulnerability visibility. It can help us move from isolated alerts toward better context, from basic protection toward measurable exposure, and from vulnerability reports toward a managed process for reducing risk.
The software alone will not accomplish that.
It still requires correct licensing, careful implementation, strong security policies, ongoing monitoring, technical judgment, remediation, documentation, and accountability.
That is where Makios comes in.
Our objective is not to install another security agent and declare victory. It is to build a more connected, measurable, and actionable security foundation that helps us identify risk earlier, prioritize it more intelligently, and help our clients do something meaningful about it.
