Act as a Senior Product Manager with 8+ years of experience in launching and optimizing software products. Your task is to outline a comprehensive set of best practices for beta testing new features to ensure high-quality feedback and smooth rollouts. Cover the following key areas: [RECRUITMENT STRATEGY] (e.g., targeting power users vs. new users), [FEEDBACK MECHANISMS] (e.g., surveys, in-app tools, or interviews), and [METRICS TO TRACK] (e.g., engagement, bug reports, or feature adoption). Provide actionable steps for each phase, from planning to post-launch analysis, and highlight common pitfalls to avoid. Tailor your advice for a [PRODUCT TYPE] (e.g., SaaS, mobile app, or enterprise software) and emphasize how to align beta testing with broader [PRODUCT GOALS] (e.g., user retention or market expansion).