Packer, available at [packer.io](https://www.packer.io), is an open-source tool developed by HashiCorp that automates the creation of identical machine images for multiple platforms from a single source configuration. By doing so, Packer streamlines the process of image management, allowing users to build and deploy software more efficiently. It supports a wide array of platforms, including AWS, Azure, Google Cloud, and more. Packer is especially valued for its ability to integrate with existing infrastructure and workflow tools, enabling teams to package and provision images quickly while ensuring consistency and reliability across different environments.