Program development for Win 7 and Win 10. What are the differences?

Question

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Hello!
I ask for help to the teapot in this area :)
The essence of the problem:
I am writing a technical specification for the development of a small program for Windows. With win 7 - everything is clear, at the output of the exe distribution kit, downloaded, installed, everything is usual, familiar ...
But now there is Win 10 and I have a few questions:
- is the development of programs for Win 7 and Win 10 very different ?
- since in Win 10 the installation comes from the application store, I started adding it there ... Tell me, who should do this, me or the developer? How much will the price increase? Is it worth it?
- how towrite in the TOR that the program should work on Win 7 (having received the exe distribution kit from the developer) and should be compatible with Win 10?
- since I'm not a programmer, and also almost unfamiliar with Win 10, how to correctly write that adding to the Windows app store should be done by the developer?
I ask for as much detail as possible (for a teapot) + I guarantee to karma :). Thanks in advance!

Answer 1

If you do not need a universal application that works on winphone, xbox and other damn things where a dozen gets up, then rewriting the application for win10 is a waste of money and time.
Everything that worked under win7 (if it's not some complex graphics or sound packs) will also continue to work under win10.
Are there at least 2 people among your acquaintances who would use this store on the desktop?

Answer 2

there is no difference
, you can run the exe on win10, but what's the point of going to the store? if the program for you under the order

Answer 3

There are minor differences, they are due to a change in some approaches in Win10 itself. For example, just making a program added to Startup will no longer work, and so on. little things...