M365: Cross-Platform Security & Compliance
Solid Security NOW and Future Ready
Security and compliance for all your devices: Windows, Apple, and Android.
The AI era is here. Build a secure foundation now — across Windows, macOS, iOS, and Android — to protect your data, empower your users, and stay compliance-ready as technology accelerates.
🔐 Security Model Overview: Light vs Full
At Prestwood IT, we implement Microsoft 365 security and compliance using two proven models:
- 🟢 Light Security Model – Designed for flexible BYOD environments with essential protections like MFA, secure apps (Outlook/Teams), and optional device registration. Ideal for industries without strict compliance requirements.
- 🔒 Full Security Model – Required for industries with regulatory or contractual obligations. Enforces full device enrollment, encryption, access policies, and endpoint visibility across Windows, macOS, Android, and iOS.
Android? Apple? We’re Ready.
We set up Managed Google Play and Apple Business Manager for you
To manage Android devices, we configure a free Managed Google Play account. For Apple devices, we link your domain to Apple Business Manager (ABM). This takes about 1–3 days and unlocks enterprise-grade device controls when you need them.
Your Tenant, Professionally Configured
We start by securing your Microsoft 365 foundation
We create or assume control of your Microsoft 365 tenant and configure it for secure email, domain identity, and user access. This includes best-practice security defaults, your custom domain, and Global Admin role delegation to Prestwood IT.
Cloud-Based Security That Works on Every Device
Identity, access, and protection — across Windows, macOS, iOS, and Android
Your staff uses all kinds of devices — and security shouldn’t break just because they’re on a MacBook, Android phone, or iPad. Our setup brings login, access, and device protection into one unified Microsoft 365-powered system that works across platforms.
A Security Baseline Built to Scale
MFA and device-ready policies from Day One
We enforce Multi-Factor Authentication (MFA) and establish an Intune-ready baseline for Windows, macOS, iOS, and Android devices. This enables lightweight management now, and full MDM control later — when you’re ready.
Two Security Models. One Unified Platform.
Light Security Model
Default Compliance
Full Security Model
Strong Baseline
🟢 Light Security Model
For organizations that allow personal or mixed-use devices
Ideal for industries with low or no compliance requirements (e.g., retail, logistics, construction, real estate). The Light Security Model allows a flexible mix of unmanaged, registered, and enrolled devices, supported by core Microsoft 365 services such as email, Teams collaboration, and file sharing.
Light Security: Designed for industries that allow a flexible mix of unmanaged and lightly registered BYOD devices.
- Recommendation: All desktops and servers on plan
- BYOD and mobile devices are lightly managed via our Managed M365 plan (Intune registration optional)
- Company owned desktops and mobile devices can be fully Intune enrolled.
Perfect for modern offices that embrace BYOD flexibility.
🔒 Full Security Model
For organizations with compliance needs and security priorities
Designed for industries like healthcare, finance, legal, or anyone handling sensitive data, the Full Security Model provides robust endpoint control, encryption, and compliance enforcement using Microsoft Intune, Managed Google Play, and Apple Business Manager.
Full Security: Required for industries with regulatory or contractual compliance needs.
Everything in the Light model, plus:
- Requirement: All desktops and servers on Managed IT plan
- Business-class SonicWall on plan
- All company owned and BYOD devices are Intune enrolled and compliance-enforced through Managed M365
- Conditional Access, compliance policies, and monitoring
- Onboarding checklists and SOP documentation
- Integration with SonicWall perimeter security
- Windows computers managed via Lighthouse.
- Meets HIPAA, FINRA, and other regulatory standards
Our most secure and comprehensive solution.
Full Security Model – Full Cross-Platform Management
Windows-first support for macOS, Android, and BYOD.
Our Full Security Model is built around Microsoft 365 Lighthouse and Intune, giving us centralized oversight and policy management for all Windows devices.
- Centralized policy management via Microsoft 365 Lighthouse
- Standardized compliance enforcement across devices
- Ongoing monitoring and tuning of Intune and Conditional Access
- BYOD enrollment and enforcement
For macOS, Android, and BYOD devices, we use a more tailored, per-device approach. These non-Windows devices are fully enrolled and secured using Microsoft Intune, but because they fall outside of Lighthouse’s centralized management, we configure and support them on request.
2FA and Zero Trust Compliance
Establishing the Right Level
With 2FA, 2-step verification, you can implement zero compliance. For industries like construction, every few days can work while financial industries are more strict. Some industries fall under CUI-NIST, HIPAA, ISO, and other compliance standards.
The three types of “factors:”
• Something you know – a password or PIN.
• Something you have – a smartphone or a physical key.
• Something you are – your fingerprint or your face.
Compatible with Hybrid and On-Prem Systems
Your AD-DC and on-premise security still matter
For companies with existing servers or local IT infrastructure, this setup integrates with on-prem Active Directory, enabling under-the-roof security and hybrid deployment flexibility.
Full Security Model Highlights
Windows Hello for Business
Compliance at the Credential Level
Passwordless Login Meets Modern Security Frameworks!
Windows Hello for Business (WHfB) is more than just a PIN or fingerprint — it’s a compliance-ready authentication system backed by TPM hardware and tied directly into your Microsoft 365 identity layer. It supports zero trust architecture and meets key requirements in DFARS, NIST 800‑171, HIPAA, and more.
✅ FIPS 140‑2 certified cryptography with TPM-bound keys
✅ Replaces password logins with strong, phishing-resistant credentials
✅ Satisfies NIST 800‑171 3.5.x controls (Identification & Authentication)
✅ Enables MFA with something you have (device) and something you know or are (PIN/biometric)
✅ Works across hybrid AD and Entra ID in supported domain models
✅ PIN and biometric policies configurable via Intune or GPO
Designed for the AI Era
Your path to secure AI and Copilot readiness starts here
AI services like Microsoft Copilot require identity controls, secure file access, and proper app governance. This setup positions you to adopt modern AI tools without risking compliance or data loss.
DFARS and NIST 800-171 Compliance Made Simple
Our Full Security Model combines Entra ID, Intune, and Bitdefender (via N-Able) to lock down endpoints, enforce encryption, and meet rigorous federal security frameworks. Whether you’re preparing for a contract or just want airtight protection, we’ve got you covered.
CUI Governed by NIST Compliance
Minimize exposure. Maximize control.
With CUI governed by NIST we can enforce the principle of least privilege by ensuring users only have access to what they need — nothing more.
Full Security Model Addons
Managed Passwords • N-Central Compliance
Add Managed Passwords
Supports HIPAA, NIST, SOC 2, and ISO Compliance
Our Managed Business Passwords service delivers a secure, company-wide solution with NordPass. We handle setup, monitor for breaches, manage user access, and provide monthly oversight—so you can stay focused on running your business.
Add N‑Central Compliance
Robust At-Rest Encryption Monitoring
Upgrade to full compliance oversight with our premium N‑Central Disk Encryption service. This Windows-only add-on actively monitors BitLocker status and enforces encryption standards to meet at-rest data protection requirements under HIPAA, NIST, SOC 2, and ISO 27001.
Includes our custom “Compliance” service template monitored as part of our active issues for audit readiness and continuous visibility. (Sold per device per month — ask us for a quote.)
Backed by Real MSP Standards
You’re not getting guesswork — you’re getting proven process
We document everything, manage your credentials securely, and give you access to our proprietary 135-step I.T. Roadmap — custom-tailored for your business. It’s more than setup. It’s a system.
| Feature | Light Security Model | Full Security Model |
|---|---|---|
| Device Control | Optional Registration (Intune Visibility Only) |
Mandatory Enrollment (via Company Portal) |
| Compliance Requirements | As-Needed (per device or user role) |
Enforced (M365 compliance + security baseline) |
| Email + MFA | Default | Default |
| App Protection | Outlook/Teams App Control | App Control + Sensitivity Labels |
| Mobile Devices | Android/iOS optional with basic policies | Managed via ABM and Managed Google Play |
| Windows/Mac Desktops | Can be unmanaged or registered | Must be enrolled in Intune |
| Chromebook Support | Allowed under Model 1 only | Not supported |
| Recommended For | Retail, Logistics, Construction | Medical, Legal, Financial, Insurance |
Solid Security Now and Future-Ready
Baseline today. Compliance when you need it.
Our M365 Company-in-the-Cloud core setup prepares your business for the AI-driven future and its evolving security demands. When you’re ready, layer in advanced services like sensitivity labels, DLP policies, encryption tuning, and device compliance — plus full HIPAA, CUI, NIST, or SOC 2 readiness. All billed hourly, only as needed.