Hi,
Yes, it is possible to create multiple
 websites with different domain names in Odoo while centralizing 
inventory and product management. This can be achieved through Odoo's 
multi-website feature. However, it's essential to note that the ability 
to manage multiple websites with centralized inventory might depend on 
the specific version and configuration of Odoo you are using, especially
 in the Odoo Online version.
Here's a general outline of how you can set this up in Odoo:
1. Enable Odoo's multi-website feature to facilitate the creation of distinct websites within a single instance.
2. Create separate websites under the website application for each domain you intend to use.
3. Configure domain names individually for each website to ensure they are distinguishable.
4. Centralize inventory management within Odoo to oversee all products and stock levels from a unified interface.
5. Manage products centrally by creating and organizing them within Odoo's product database.
6. Adjust access rights to specify permissions for users managing inventory and products across all websites.
Hope this helps.