Hello SEO guys, I know Breadcrumb is a secondary navigation which increase usability, is it really necessary to use breadcrumb?
Actually Breadcrump Links are used for improving navigation of pages, it gives user the better experience of navigation between the pages. If a customer who went inside page and he need to comes out to previous page or Home page this Breadcrump link help solving out those problems. The same way Search engines also get information regarding this who your page structure goes, if web site follows good navigation structure with Breadcrump links your pages will get good priority when a user visits.