We are currently planning on registering multiple domains for different parts of the website we own. For example consider that we have
example.com as the main domain and have assigned all the sub-departments their own subdomain.
There will be
articles.example.com, etc. Now for marketing reasons we plan to register
The catch here is all these domains should somehow point to their respective subdomains. We can either use a permanent redirect or have and iframe to display the content directly from the subdomains.
Which approach is better considering SEO? Will using iframes be considered replicating content by search engines? Or is it at all wise to have different domains?