Is it possible to implement a user's personal account without a server part?

Question

Online shopping

I want to write my own simple CMS, I think to do without the server part, if possible, make the created sites static.
But what about the user's personal account, for example, if it is an online store?

Answer 1

And what for an office to the user in general?
If you do a simple option, then your order form is immediately sent to the mail of the store manager

Answer 2

You can use the backend platform, for example, Google Firebase
You can minimize the server part. For an online store, this can be reduced to a single API call - "Send Order to Manager". The cart and even search ( www.tipue.com/search ) can be implemented purely on the frontend.
Product pages are static, easily.

Answer 3

Theoretically possible.
Store all information in the browser. The only drawback is that it can no longer be obtained on another device.
Still theoretically, you can use the server part in the miracle of the browser (if there is an API) - ask the user to log in, for example, on Google docs and store everything there (this is conditional, I don’t know if they have an API available purely from js).
But this is all perverted and we need to make the server part :)