What is Search Engine Optimization (also known as SEO)? A broad definition is that search engine optimization is the art and science of making web pages attractive to search engines. More narrowly, SEO seeks to tweak particular factors known to affect search engine standing to make certain pages more attractive to search engines than other web pages that are vying for the same keywords or keyword phrases.
Inclusion in Google's search results is free and easy; you don't even need to submit your site to Google. Google is a fully automated search engine that uses web crawlers to explore the web constantly, looking for sites to add to our index. In fact, the vast majority of sites listed in our results aren't manually submitted for inclusion, but found and added automatically when we crawl the web. Learn how Google discovers, crawls, and serves web pages.3
This is excellent and should be intuitive for marketers (and SEO pros are marketers!) but we often take the short cut and neglect critical details. What would also reinforce the strategy is way of providing solid projections for SEO (these could be based on industry trends and statistics). Clients now ask for ways to calculate ROI and they need numbers to get budget approvals. Increase in traffic by X, increase in qualified traffic and leads, conversions etc, some way of quatifying the expected return.
If you create memorable content, people will want to come back for more. So instead of churning out lackluster content that can be found anywhere on the web, write higher quality, unique content that caters directly to your audience. Speak your opinion on a subject matter, instead of just objectively providing facts. Create useful, thought-provoking content. Posting three so-so blog posts a week will not be nearly effective as posting one superb blog post per week.
It’s not enough to just share content through social channels – you need to actively participate in the community, too. Got a Twitter account? Then join in group discussions with relevant hashtags. Is your audience leaving comments on your Facebook posts? Answer questions and engage with your readers. Nothing turns people off quicker than using social media as a broadcast channel – use social media as it was intended and actually interact with your fans.
Meta tags. Meta tags still play a vital role in SEO. If you type any keyword into a search engine, you’ll see how that keyword is reflected in the title for that page. Google looks at your page title as a signal of relevance for that keyword. The same holds true for the description of that page. (Don't worry about the keyword title tag -- Google has publicly said that it doesn't pay attention to that tag, since it has been abused by webmasters and all those trying to rank for certain keywords.)
If you are using Responsive Web Design, use meta name="viewport" tag to tell the browser how to adjust the content. If you use Dynamic Serving, use the Vary HTTP header to signal your changes depending on the user-agent. If you are using separate URLs, signal the relationship between two URLs by tag with rel="canonical" and rel="alternate" elements.