Magento Extension Quality Program
All our extensions are thoroughly tested and approved by Magento. They all follow the Extension Quality Program (EQP).
The review process includes both an automated check and manual QA review. During the process, the structure and code of the extension is examined and tested for evidence of virus/malware infection, and any indication of plagiarism.
The manual QA review includes a deep technical examination and sanity check conducted by a Magento engineer, with a focus on documentation, coding structure, performance, scalability, security, and compatibility with the Magento core. If the extension does not pass technical or marketing reviews they will not be be listed on Marketplace.
During Technical Review, the extension code is scanned and validated via automated testing and manual QA. During Marketing Review, the extension marketing information (including the documentation and images) is examined for quality and to make sure that it meets Magento marketing guidelines. If the extension doesn't pass either review it will not be approved for Marketplace.
So when buying a Best4Mage Extension you are always sure it meets Magento guidelines on quality!