301 redirects are permanent, so they only need to be set up once. They can signal to search engines that a page has been permanently moved or removed, which can help boost website traffic in the process.
A 302 redirect is a permanent redirect, meaning that you are telling the browser to permanently send visitors from one page to another. In other words, it's a more permanent solution to 301 redirects.
Website breadcrumbs reveal the nesting of webpages within one another in a hierarchy. They’re used to help web users find relevant content, showing up on SERPs.
A site map is a list of pages on your site and their relative importance. Use sitemaps to make it easier for visitors to find what they're looking for, and to ensure that search engines can find all the information they need.