There are several techniques to forward multiple domains to a single web server in a way that is friendly to search engines:
Regardless of the technique used, it is important to ensure that the forwarding process does not cause any technical SEO issues, such as broken links, duplicate content, or incorrect use of redirects. Additionally, it is recommended to configure web analytics and tracking correctly to accurately track traffic and conversion data for all domains.
To summarize, the best technique for SEO-friendly forwarding multiple domains to one web server is to use a combination of domain forwarding with a 301 redirect, rel="canonical" tags, and rel="alternate" hreflang tags. However, it is important to address any technical SEO issues that may arise from the forwarding process and accurately configure web analytics and tracking for all domains.
Yes, that is a good summary. By using domain forwarding with a 301 redirect, rel="canonical" tags, and rel="alternate" hreflang tags, you can ensure that search engines understand the relationship between the multiple domains and the primary domain. This helps to prevent duplicate content issues and allows for proper indexing and ranking of the primary domain. Additionally, addressing any technical SEO issues and configuring web analytics and tracking correctly ensures accurate measurement of traffic and conversions for all domains.