tl;dr: Mozilla is launching Firefox Enterprise, an on-premises managed browser aimed at regulated and security-sensitive organizations, offering centralized policy control, native DLP, AI tool restrictions, SIEM integration, and extension governance. It emphasizes data sovereignty, open-source transparency, and browser diversity (via Mozilla's independent engine) as differentiators from Chromium-based enterprise browsers, with compliance targeting DORA, GDPR, NIS2, ISO27001, and SOC2. A Thunderbird Enterprise offering for managing email/calendar/contacts is also coming soon.