As a developer building a notification system, it's essential to understand the importance of observability and analytics in maintaining and scaling your product. By monitoring application performance, identifying potential errors or outages, and making informed decisions to prevent them, you can ensure a high-quality user experience and drive business growth. Observability provides a holistic view of your application's state, allowing you to reason about how certain factors affect your product. With the right tools and strategies, such as correlating and normalizing events data, tracking logs for debugging, improving customer service, and using analytics for business development, you can design an observability environment that understands data, compares it across various channels and infrastructure, and provides actionable insights. By focusing on metrics, logs, and traces, and integrating them with your existing tech stack, you can build a notification system that is both functional and scalable. Ultimately, observability is vital for maintaining and scaling your product, providing preventative measures to improve performance and health while driving business growth through measurable, actionable, and meaningful data.