Cloud-based antivirus products can provide several benefits: centralized management, simpler PC deployments and less reliance on users. Panda, McAfee, Symantec, and Microsoft are several that offer cloud services in conjunction with their traditional AV tools. They use a small footprint agent on the desktop that communicates with their cloud to provide monitoring, remediation, and protection. The cloud services aren’t good for aging Windows versions (think XP or Windows Server 2003) and Mac support also lags. They also aren’t good in the case where your endpoint isn’t always connected to the Internet. On the plus side, some of these products offer separate add-ons to include e-mail scanning, auto-updates of operating system patches, website phishing protection, and desktop firewalls. You need to weigh the advantages and disadvantages to see if these tools makes sense for your particular circumstances.