Apex Developer Guide
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Debugging, Testing, and Deploying Apex
Develop your Apex code in a sandbox and debug it with the Developer Console and debug
logs. Unit-test your code, then distribute it to customers using packages.
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Debugging Apex
Apex provides debugging support. You can debug your Apex code using the Developer Console and debug logs. -
Testing Apex
Apex provides a testing framework that allows you to write unit tests, run your tests, check test results, and have code coverage results. -
Deploying Apex
You can't develop Apex in your Salesforce production org. Your development work is done in a sandbox, in a scratch org, or in a Developer Edition org. -
Distributing Apex Using Managed Packages
As an ISV or Salesforce partner, you can distribute Apex code to customer organizations using packages. Here we'll describe packages and package versioning.