Why are redirects important in site migration?

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Redirects are extremely important because they help both search engines and users find pages that may no longer exist, have been renamed, or have been moved to another location. From an SEO perspective, redirects help search engines not only quickly discover and index new URLs on a site, but also understand how old pages on the site relate to pages on the new site. This association will allow ranking signals to pass from old pages to new pages, so rankings are maintained without negatively impacting them.

What happens when redirects are not implemented correctly?
When redirects are implemented poorly, the argentina number data results can be disastrous. Users will either land on Not Found Pages (404s) or on irrelevant pages that don’t meet the user’s intent. In both cases, the site’s bounce and conversion rates will be negatively affected. The results for search engines can be equally disastrous: if the URLs aren’t the same, they won’t be able to link pages from the old site to pages on the new site. Ranking signals won’t be transferred from the old site to the new site, resulting in a drop in rankings and reduced organic search visibility. In addition, it will take longer for search engines to discover and index pages on the new site.

301, 302, JavaScript redirect, or meta refresh?
Use 301 (permanent) redirects when the URLs between the old and new versions of a site are different. This will tell search engines to index the new URL and forward any ranking signals from the old URL to the new URL. Therefore, if your site moves to/from a different domain/subdomain, if you move from HTTP to HTTPS, or if the site or parts of it are reorganized, you should use 301 redirects. Despite some claims from Google that 302 redirects pass on page rank, indexing the new URL will be slower and it may take longer for ranking signals to pass from the old to the new page.