If I have 2 domain names that point to same website (for example: microsoft.com and microsoft.net both point to microsoft.com), how can search engines distinguish that these two websites are the same website and not duplicate content?
My question is because I know that Google, for example, have a duplicate content filter, and I want know what to do to declaratively say that the two domains are the same and are not duplicate content websites.
Thanks!
You absolutely can have multiple domain names, but you don't want them to resolve or be indexed by Google. To prevent that you set up a 301-redirect or “forward” the domain to the “real” domain.
I can tell you now, having one “website” answer to multiple domains simply creates multiple websites of duplicate content and that is absolutely not beneficial for SEO and/or Google.
Key Takeaways There are several good reasons to register multiple domain names for a website. Multiple domain names will give people more ways to find your website in a crowded online space and marketplace. Attracting more people to your website helps you build your personal and professional brand.
Having multiple domains may help or hurt SEO based on your brand(s), strategy, and investment in the process. In general, multiple domains will create SEO concerns when not executed properly, so you'll want to understand how to leverage each domain according to the overall strategy.
Choose which is to be the primary domain and then implement a 301 redirect on the other.
Is it important that the user always stays at the domain entered, or are the second merely an alias for the first? If the latter is the case, you could do a HTTP redirect to the desired domainname, when the user visits one of the aliases.
EDIT: Guess Mat beat me to it. :-)
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