In the blog post by Jess Mitchell dated August 22, 2023, the focus is on the design and implementation of an intuitive Leave button for video call applications, particularly using Daily Prebuilt, a video component that can be easily integrated into web apps. The article explores both technical and design considerations, such as the use of Daily's showLeaveButton property and custom Leave button creation with the Daily Client SDK for JavaScript. Key design aspects include the strategic placement of the Leave button, often isolated to prevent accidental clicks, and its red color to signal caution. The blog argues against unnecessary alerts when leaving a call, emphasizing a seamless and user-friendly experience. Additionally, it suggests providing feedback to users post-call to confirm the action and maintain a positive interaction. The Leave button's design underlines the importance of user control and accessibility, aiming to create a smooth and non-disruptive call-leaving process that enhances overall user satisfaction with the video call app.