Microsoft Defender, cybersecurity software, enterprise-level protection, scalable pricing, subscription-based model, cloud-based service, real-time threat detection, antivirus, anti-malware, Windows integration, multi-device support, advanced threat protection, data breach prevention, endpoint security, customizable security policies, automatic updates, business-grade firewall, network defense, cybersecurity analytics, user-friendly interface, cross-platform compatibility, Microsoft 365 integration, cost-effective solution, free basic version, premium features, additional cost for advanced protection, volume licensing discounts, official Microsoft website for exact pricing, security package options, tailored for small to large businesses, flexible payment plans, annual or monthly billing options.