Suggestions appear as you type. Use the up and down arrows to choose one and Enter to open it.

This page's audience our own tag's counts — open to see them
–Visits
–Page views
–Clicks to vendors
–Time on page
–Reading now
Clicks to vendors, by tool
  • –
Top countries
  • –
Devices
  • –

– · visits, page views and clicks counted by our own tag, which counts more than our checked analytics; every figure rounded down · how we count

Head-to-head · Antivirus Software

Microsoft Defender for Business vs Bitdefender GravityZone Small Business Security

  • Updated Oct 2026
  • Both researched from official sources
  • 3 checks side by side

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

Advertiser disclosure: iTechGuides is reader-supported. Vendors can pay for top positions in our rankings and for a place on other products' pages, and we may earn a commission when you click some links. Bought places stand at the number bought; this page and our disclosure say so. Paying vendors may get a fuller, more detailed review from our editors, and that review can change their score. How we rank.

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
  • EDR includes automatic attack disruption and automated remediation
  • Protects Windows, macOS, iOS, and Android devices
  • Includes vulnerability management, APIs, SIEM, and RMM integrations
  • Advanced anti-exploit and fileless attack defense
  • Ransomware mitigation with tamper-proof file backups
  • Centralized management across Windows, Linux, and macOS
Cons
  • 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
  • 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
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 →
  1. Microsoft Defender for BusinessAntivirus Software 9.430-day trial
  2. Bitdefender GravityZone Small Business SecurityAntivirus Software 9.3Paid

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 →

More comparisons

Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026

Last updated · How we research and update