Thank you Roel for your answer and Maybe below will interest you.
Many of my acquaintances utilize Microsoft Calendar for professional purposes, while opting for calDav (Baikal) for personal use. Should the calDav standard continue to gain widespread adoption, it could potentially diminish one of Microsoft's competitive advantages. Individuals with technical expertise have increasingly abandoned proprietary calendar systems in favor of Caldav's open protocol. This protocol enables seamless integration with a variety of calendar apps across different platforms. It is similar to OpenTask, allowing you to manage a single task or note across multiple apps and platforms, particularly for those who prefer to keep their data private in selfhosted app and avoid cloud storage. I want to emphasize that this isn't a demand but rather a suggestion. I understand that Luxsoft can't prioritize this feature immediately. However, I believe that integrating LuxCal would offer significant benefits without any apparent drawbacks.