• Intellectual Property Protection: You can package managed applications developed with Apex without exposing your organization’s intellectual property. Customers who install your managed package will be able to execute Apex business logic, but they won’t be able to see the source code.
• New Class of Applications: Packaged partner applications that are certified have their own resource pool and do not count against Apex Code governor limits. Certified applications can be installed into any Salesforce edition.
• Dependency Management: The dependency check for a feature, such as business-to-individual, divisions, multi-currency, etc, now executes when an application is installed instead of during the upload process.

Note: This feature is enabled by default.