I have built a new website to replace a client's existing company website on the same URL. The content is entirely different, and none of the page links are the same.
Do I have any issues to worry about in terms of SEO?
I'm thinking particularly whether broken links from other sites to old pages might affect ranking for the new site?
I believe I need to set up a 301 redirect to forward broken links to the new site home page – is this all I need to do?
Any help or pointers appreciated.