Introduction to Composer

We use Composer to manage components and their dependencies. Using Composer to get the Adobe Commerce and Magento Open Source software metapackage provides the following advantages:

• Reuse third-party libraries without bundling them with source code
• Reduce extension conflicts and compatibility issues by using a component-based architecture with robust dependency management
• Adhere to PHP-Framework Interoperability Group (FIG) standards
• Repackage the software with other components
• Use the software in a production environment

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Links to code

The key to developing any component is its composer.json file, which specifies version and dependency information for a component, among other things. You can look at the code, such as:

• Metapackage, look at <magento_root>/composer.json.
• Customer module
• Luma theme
• en_us language package

For more information

For more information about Composer, see the Composer documentation.