For Seo We are saying two process on-page and off-page. Onpage contains Meta terms, content,h1,interlink between the pages,density.... offpage contains different type of submissions Like this Sem What are all the activities contains i only know ppc,banner add, press release, social networking, then what are there pls explain me clearly
SEO is a part of SEM. SEM consists of PPC, link building, content management, marketing strategies, SEO..