As per my concern you can build

Quality Content
Titles and Meta Data
Semantic Mark Up
Effective Keyword Use
Quality Inbound Links ......using good SEO techniques

Meta description tag is an important part of whole SEO, description is used some times as a part of the snippet shown in the search results....in another way sometimes meta tags can control the behavior of search engine crawling and indexing....

Sitemaps, as the name implies, are just a map of your site - i.e. on one single page you show the structure of your site. Not only easier navigation and better visibility by search engines.You need to generate it, then you upload it to your site

Activity of optimizing Web pages.....

Things we actually do: Keyword strategy Page level (contextual) Site level Server level (redirects, htaccess, etc.) Monitoring (Google Webmaster Tools, reporting, etc.) Forensic work (cleaning up others garbage) Areas we're advisory in: Site development (architecture, updates, etc.) Content strategy...

Acknowledged to get people to click your website, generate traffic, approach them into leads is mean of website promotion.

XML Sitemap is a sitemap designed specifically for the search engines to read. It helps Google make sure is has found every page on your website. XML Sitemap boost the search engine rankings of your website & getting all of your pages get indexed as well.

SEO become the backbone for online businesses.Each new day optimizers are coming across with new algorithm.