The features I have found to be most valuable are the levels of encryption I can enact and the compression I can apply to improve throughput.
OpenVPN Access Server allows secure network access across Windows, Mac, and Linux, featuring strong encryption and privacy. As an open-source, cost-effective solution, it offers scalability and stable performance with multi-factor authentication. However, its reliance on Linux expertise, upgrade challenges, and limited protocol support pose difficulties. Despite connectivity and stability concerns, it remains suitable for small projects with its easy deployment. Improvements in scalability and speed are needed to enhance its functionality.