During March 2025, Lukas Paczos developed an internal experimental feature for default browser prompts within the duckduckgo/privacy-configuration repository. He implemented a feature flag-driven approach using Python, focusing on configuration management and feature flagging to enable controlled internal testing. This allowed the team to surface default browser prompts exclusively to internal users, collect targeted feedback, and mitigate risk before a broader rollout. Lukas established a clear pathway for testing and gating access, aligning the work with product quality assurance and risk reduction objectives. The depth of the implementation ensured safe experimentation and readiness for future expansion without introducing regressions.