AWS, JavaScript, React - Deploy Web Apps on the Cloud - Code Pen

In this lesson, the instructor transitions from using a simple text editor to Codepen for React development. The video covers setting up Codepen, including creating HTML, CSS, and JavaScript windows for live rendering. It explains how to import scripts and manage settings to streamline the coding process. The lesson introduces Babel as a JavaScript preprocessor to enable JSX syntax, demonstrating its functionality and benefits. The instructor concludes by hinting at a deeper dive into JSX in the next lesson.

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