Online casinos measure their overall success through a combination of metrics that assess financial performance, customer engagement, and operational efficiency. Key indicators include revenue generated, player retention rates, and average revenue per user (ARPU), which help gauge profitability and customer loyalty. Additionally, casinos monitor the number of active players, game popularity, and payout ratios to evaluate game performance and user satisfaction. Regulatory compliance and responsible gaming practices are also crucial, as they affect reputation and sustainability.