Nylas faced a challenge in streamlining the integration of their APIs with customers' software, leading to the development of the Nylas Scheduler, a prepackaged, full-stack workflow launched in 2019. The first version, while easy to use and rapidly adopted, encountered limitations in flexibility and customizability. This prompted a reimagining of the product with Nylas API v3, culminating in Scheduler v3, which addresses these issues by utilizing Web Components built with Stencil.js, allowing modularity, customization, and framework independence. The new Scheduler enhances user experience by enabling detailed customization through event overrides and styling options while maintaining ease of integration. This redesign ensures that developers can implement specific business logic without the complexity of extensive backend changes, providing a scalable and maintainable solution. The Scheduler aims to empower users by providing flexible tools that adapt to unique needs without obstructing development workflows.