Design a network platform

This is a draft about a business plan design. only neet to write 500 words. we are requested to design a network platform.for example: there are 2 people named A and B . A can speck German, He want to work on German teaching. then He post a message to our network platform. B wants to study German. He is looking for a teacher who can teach German. Then he(B) can find A by our network platform.

Please read specific details through the materials.