The embed package in Go, introduced in version 1.16, allows developers to easily include external files—like configuration files, images, or databases—into their CLI applications’ binaries. This dramatically simplifies the distribution process, eliminating the need for hardcoded data strings or online downloads, thus enhancing data integrity and ease of use. By utilizing the embed directive, developers can seamlessly embed files into their binary at compile time, ensuring that necessary resources are bundled with the application, even if the original files are removed. Furthermore, the embed package supports not just individual files but entire directories through its fs type, which integrates smoothly with Go's file handling methods. This capability is particularly beneficial for providing configuration setups or static assets in applications, offering a significant advantage in context like web servers and CLI tools. The lesson encourages practical engagement with the embed package to enhance understanding of its functionality within application development.