LMS is the system that allows any organization to start and continuously run e-learning initiatives. If you are going to build a custom LMS, you should be aware that you have two options: private and public LMS systems.

• A private LMS system is usually developed for an organization that plans an external use. In such a system company manages various employees' training and guides. You can always consider building a SaaS LMS solution and provide services to the teams who cannot afford to develop custom software.
• Public LMS systems are usually web-based, but there are many cases when such systems are represented as mobile apps or have mobile app versions. Good examples of public LMS systems are Duolingo, Coursera, and Udemy. These platforms allow students to tune their skills and learn new things. If you are considering creating your own LMS solution, the best option is to research the market and find niches that need such software.