Head-to-head · Antivirus Software
Microsoft Defender for Business vs Bitdefender GravityZone Small Business Security
Microsoft Defender for Business leads on 0 checks, Bitdefender GravityZone Small Business Security on 1, and 2 are even. Who comes out ahead on the 3 yes/no, price and count checks where we have data for both products. The editor score weighs everything else too.
Our verdict
- Highest scoreMicrosoft Defender for Business · 9.4/10
- Free trialonly Microsoft Defender for Business
Microsoft Defender for Business scores higher on our rubric for antivirus software: 9.4 against 9.3 out of 10; our editors rank them #1 and #2.
Bitdefender GravityZone Small Business Security leads on device limit: 100 devices versus 5 devices.
Microsoft Defender for Business is the better fit for small businesses needing managed endpoint security. Bitdefender GravityZone Small Business Security is the better fit for small businesses with advanced endpoint needs.
- Microsoft Defender for Business fits best
Small businesses needing managed endpoint security
- Bitdefender GravityZone Small Business Security fits best
Small businesses with advanced endpoint needs
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Side by side
| Feature | Microsoft Defender for Business 9.4/10 Visit ↗ | Bitdefender GravityZone Small Business Security 9.3/10 Visit ↗ |
|---|---|---|
| At a glance | ||
| Editor score | 9.4 | 9.3 |
| Ranking | #1 in Antivirus Software | #2 in Antivirus Software |
| Best for | Small businesses needing managed endpoint security | Small businesses with advanced endpoint needs |
| Pricing model | Paid | Paid |
| Starting price | $3/user/mo | Not checked yet |
| Free plan | — | — |
| Free trial | 30 days | — |
| Deployment | Cloud, Mobile | Cloud |
| Platforms | Web, Windows, macOS, iOS, Android | Web, Windows, macOS, Linux |
| Support | Docs | Live chat, Phone, Tickets, Community, Docs · 24/7 |
| Built for | Small business, Mid-market | Small business |
| Features Microsoft Defender for Business 1/3 · Bitdefender GravityZone Small Business Security 1/3 | ||
| Ransomware protection | ✓ | ✓ |
| Parental controls | Not checked yet | Not checked yet |
| Password manager | Not checked yet | Not checked yet |
| Specs | ||
| Protection scope | Complete security | Complete security |
| Device limit | 5 devices | 100 devices (best) |
| Supported platforms | Windows, macOS, iOS, Android | Windows, Linux, macOS |
| Our review | ||
| Pros |
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| Cons |
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| Our verdict | Microsoft Defender for Business is an endpoint security solution for small and medium-sized organizations with up to 300 users. It combines next-generation antivirus with ransomware attack disruption, vulnerability management, attack… Read the review → |
Bitdefender GravityZone Small Business Security is an endpoint security product for small businesses managing laptops, desktops, and file servers. It combines antimalware protection with advanced anti-exploit controls, fileless attack… Read the review → |
Strengths and trade-offs
Microsoft Defender for Business — where it wins
- EDR includes automatic attack disruption and automated remediation
- Protects Windows, macOS, iOS, and Android devices
- Includes vulnerability management, APIs, SIEM, and RMM integrations
Where it doesn't
- The listed price requires annual billing
- Coverage is limited to 300 users and five devices per user
- Server protection is available only as an add-on
Bitdefender GravityZone Small Business Security — where it wins
- Advanced anti-exploit and fileless attack defense
- Ransomware mitigation with tamper-proof file backups
- Centralized management across Windows, Linux, and macOS
Where it doesn't
- Paid subscription required; there is no free plan
- Online purchase supports deployments from 1 to 100 devices
- Focused on endpoint security rather than a general-purpose IT suite
- Microsoft Defender for Business9.4/10 · 30-day trial
A focused endpoint security subscription with EDR and centralized controls for small businesses.
Visit MicrosoftFull verdict → - Bitdefender GravityZone Small Business Security9.3/10 · Paid
A paid endpoint security suite for small businesses needing layered protection and central control.
Visit BitdefenderFull verdict →
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- Microsoft Defender for Business vs Avast One
- Bitdefender GravityZone Small Business Security vs Bitdefender Total Security
- Bitdefender GravityZone Small Business Security vs ESET HOME Security
All antivirus software comparisons → · Full ranking →
Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026
Last updated · How we research and update





