How to connect several stores from 1c accounting to the site?

Question

1C

Good day to all!
There are five offline stores selling building materials, all stores have 1c accounting for goods accounting.
What is the best way to link all five stores in one online site (market)?
Communication of this kind, on the site you select a building material in the search or catalog, a request is made to offline stores, a response comes and the site generates a list of relevant building materials, then you click buy and a request for a purchase goes to a specific offline store and how should the system work further?
Questions:
1. Is it possible to implement such a system?
2. Which engine to choose?
3. How difficult is it to implement?

Answer 1

1. Possibly
2. 1C web services
3. Average.
Several issues need to be resolved:
1. The site will interact with several 1C databases, or with one common one.
2. Operations are formed on the site, and then uploaded to 1C, or 1C and uploaded to the site.
3. How critical is it to get balances in real time.
Based on this and decide what to do next.

Answer 2

1C with MSSQL or just file?