Apex in Managed Packages

Learn how to develop, distribute, and use managed Apex. Apex in managed packages can behave differently than Apex in unmanaged packages or Apex deployed directly to an org. Managed package developers and subscribers must understand these differences so that they can safely evolve their packages and integrations.

Managed Package Types
Salesforce supports the creation and distribution of Apex through different types of packages. Understand the distinctions between package types, and recognize that Apex behavior can vary across them.
Develop and Distribute Apex for Managed Packages
As an independent software vendor (ISV) or Salesforce partner, you can distribute Apex code to customer orgs by using managed packages. For first-generation managed packages (1GP) and migrated second-generation managed packages (2GP), use versioning to evolve components of your managed package gracefully without breaking existing customer integrations. Understand how global Apex in managed packages behaves and learn how to develop global Apex in managed packages specifically for agents.
Use Apex Referenced by Managed Packages
Learn how to use managed Apex effectively as a managed package subscriber.
Safely Upgrade Packages from Developer and Subscriber Perspectives
Learn how to upgrade a managed package safely through this extended example. See the actions that package developers and subscribers can take to ensure a smooth transition and safeguard the backwards compatibility of existing integrations.