How to describe the concept system?

I have an idea for a new service. The meaning of the idea can be expressed in two sentences.

But how to prepare the concept of the system including describing the functions the system and subsystems and their interaction?

It is not the level of TK, so to speak project.

Maybe there is a standard for such documents, required items, etc?

Where do you can see examples? All the time I hear in the news about different incubators and crowdfunding, but really to see except references to the same news nothing.
March 23rd 20 at 19:22
1 answer
March 23rd 20 at 19:24
Does

Write TK for MVP and implement

Without implementation, your idea is not worth the time of those who have money

A large part of the ideas once the implementation is thrown out or reworked so that the original idea is not visible
And where this TK for MVP? - Ludie_Cole commented on March 23rd 20 at 19:27
@Ludie_Cole, freelance of course - Ollie.Daniel commented on March 23rd 20 at 19:30
@Ludie_Cole, Gather your teammates
Interprener without two or three teams of developers who do not understand

Can be collected including freelance - Theresa93 commented on March 23rd 20 at 19:33

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