Was this a B2B or B2C service? Were there metrics to track errors and user experience?

If it is a B2B service, it is focused on interaction between businesses, such as corporate control panels, CRM systems, or integration platforms. In B2C services, users are end consumers, such as online stores or mobile applications.

To track errors and user experience, metrics and monitoring tools are usually used, such as:

• Sentry, Bugsnag — for collecting and analyzing errors in real-time.
• Google Analytics, Yandex.Metrika — for analyzing user behavior.
• Performance metrics (LCP, FID, CLS) for assessing user experience.

For example, in a B2B service, it is important to monitor stability and errors affecting business processes, while in B2C — also analyze user paths and conversions.