Salesforce DX Developer Guide

How Salesforce Developer Experience Changes the Way You Work
Salesforce CLI Configuration and Tips
Project Setup
Authorization
Metadata Coverage
Scratch Orgs
Development
Build and Release Your App
First-Generation Managed Packages
Unlocked Packages (Generally Available) and Second-Generation Managed Packages (Beta)
Second-Generation Packaging
What’s a Package?
Types of Packaging Projects
Before You Create Second-Generation Packages
Workflow for Second-Generation Packages
Plan Second-Generation Packages
Configure Packages
Create a Package
Install a Package
Migrate Deprecated Metadata from Unlocked Packages
Uninstall a Package
Continuous Integration
Troubleshoot Salesforce DX
Limitations for Salesforce DX
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Second-Generation Packaging

Second-generation packaging (2GP) allows customers and system integrators to create packages in a source-driven development environment. You can create and deploy packages in your own Salesforce org or develop and distribute packages to your customers.
Use packaging to take advantage of these helpful features.
  • The Salesforce CLI provides commands for the entire application life cycle so you can work efficiently with your packages, scratch orgs, and development processes.
  • Options for enterprise customers to organize and deploy metadata to production orgs.
  • Multiple packages per namespace, so you can better organize your source and easily share Apex code. You can use public Apex classes across packages rather than global Apex classes.
  • Feature branch development and testing.
  • Completely API-driven functionality.
  • Packages that are built directly from the source.
  • Ease of development and distribution of dependent packages.