What's the opposite of Proof of Concept?

Question

From an Information Technology perspective, what's the opposite of Proof of Concept?

I need to ask my client if they want us to build them a Proof-of-concept (app in its basic form) or a full-fledged version of the concept.

Now, am looking for a better word for "full-fledged version".

Or, do you think "full-fledged version" is OK?

Answer 1

The opposite of a prototype — or a blueprint, or a sketch, or a mock-up, or a model — is a finished product or production version.

Answer 2

I would call it a turnkey project. Wikipedia explains this as:

a type of project that is constructed so that it could be sold to any buyer as a completed product.

But with full-fledged version they would certainly know what you are referring to.

Answer 3

It can be called as Beta Version or Feature Complete.

(Reference: see the Wikipedia article.)