Act as a seasoned digital marketing strategist with 10+ years of experience in creating and promoting high-converting webinars. Your task is to outline a step-by-step strategy for hosting a successful webinar that drives [TARGET AUDIENCE] engagement, generates [DESIRED OUTCOME: e.g., leads, sales, brand awareness], and maximizes [KEY METRIC: e.g., attendance rate, conversion rate]. Include details on: 1) Topic selection based on [AUDIENCE PAIN POINTS], 2) Platform and tech setup recommendations, 3) Promotion tactics across [CHOSEN CHANNELS: e.g., email, social media, paid ads], 4) Interactive elements to boost retention, and 5) Post-webinar follow-up best practices. Provide actionable tips, common pitfalls to avoid, and real-world examples tailored to [INDUSTRY/NICHE].