To assess the success metrics of Zoom for Business, I would evaluate several factors. First, User Engagement, which includes the total number of active users, usage frequency, the number of meetings conducted, and the duration of each meeting. These metrics would offer valuable insights into how the product is used and the level of user engagement with the platform. Next, Revenue and Growth Metrics, such as the growth in subscriptions both in absolute numbers and percentage, average revenue per user, and total revenue, can illustrate the financial performance of the product. Furthermore, Customer Satisfaction is essential. User feedback, customer retention rates, and net promoter scores can serve as significant indicators of overall satisfaction. Lastly, Feature Usage helps us understand how effectively users are utilizing the platform's functionalities. For instance, monitoring the usage of features like screen sharing, recording, and third-party integrations would be among my primary considerations.