I need your valuable points for this issue:
One of my friends has a website name called ABC and done SEO works for that website but we are gonna re-brand our website to ABCD.
ABC which we did some SEO work for before have asked about help to ensure they do not lose ranking when they rebrand. They have been bought out by a company called ABC from the USA and are going to switch all websites to this later in the year. Can you take a look at ABC (2,500 Pages now) and get back to me with thoughts on what to do when it switches to ABCD. I know about the webmaster tools (Search console) to tell google one site has switched to another and that all pages need 101 redirecting to the new site pages. Is there anything else you can think about that may need to happen to links that go to ABC do they need to change etc?