When Site A links to your web page, Google sees this as Site A endorsing, or casting a vote for, your page. Google takes into consideration all of these link votes (i.e., the website’s link profile) to draw conclusions about the relevance and significance of individual webpages and your website as a whole. This is the basic concept behind PageRank.

And now it’s 2016. A time where an effective local business search campaign needs to include all of these tactics, not just one. Half-baked efforts won't work anymore. A deep dive into each individual marketing tactic will show you that what was enough to maintain a decent search presence in the past won't produce the same outcome and potential ROI today. Local business owners need to employ these tactics correctly from the beginning and invest the time and money to build their brand online in an effort to achieve what I call “The Ideal SERP.”
Basically Google uses a complex mathematical formula called an algorithm to give a score to every website and every search people to do in Google to figure out which website should rank best for what people are looking for. Think of the algorithm like a collection of empty buckets. One bucket gives you a score for the quality of your site, one bucket gives you a score for how many sites link to you, one bucket gives you a score for how people trust you. Your job is to fill up more buckets in the algorithm than any other website. You can affect your search engine ranking by having the highest score in terms of quality of your site, of having the highest score in terms of authority of your website, of having the highest score in terms of the most trusted store for that search that people are looking for. The good thing is that there are hundreds of buckets, and for every single one of these buckets these scores put together in the algorithm to figure out where you rank is an opportunity for you to fill it up and rank better. So optimizing your site for search results really means getting the highest score in as many of these points as you can.
Who is targeted by this Campaign? Always remind yourself “who” you are aiming to reach through paid search. When choosing keywords and creating ad text, select terms your audience would search for and create ad text that speaks to their needs. Always be sure the content on your landing page logically aligns with these keywords/ad text to ensure a quality user experience and maximize your ROI. Put yourself in the visitor’s shoes. Would the Keywords and ad text catch your attention or give you helpful information?
Audiences are groups of users segmented in a variety of ways. Most often audiences are used in remarketing. Audiences can be created based upon specific pageviews, time spent on site, pages per visit, and more. Similar to keywords, audiences are bid upon based on relevance. For example, advertisers may bid more to remarket to shopping cart abandoners vs. homepage viewers.
PageRank was developed by Google founders Larry Page and Sergey Brin at Stanford. In fact the name. PageRank is a likely play on Larry Page's name. At the time that Page and Brin met, early search engines typically linked to pages that had the highest keyword density, which meant people could game the system by repeating the same phrase over and over to attract higher search page results. Sometimes web designers would even put hidden text on pages to repeat phrases. 
The PageRank concept is that a page casts votes for one or more other pages. Nothing is said in the original PageRank document about a page casting more than one vote for a single page. The idea seems to be against the PageRank concept and would certainly be open to manipulation by unrealistically proportioning votes for target pages. E.g. if an outbound link, or a link to an unimportant page, is necessary, add a bunch of links to an important page to minimize the effect.
I find that companies without a digital strategy (and many that do) don't have a clear strategic goal for what they want to achieve online in terms of gaining new customers or building deeper relationships with existing ones. And if you don't have goals with SMART digital marketing objectives you likely don't put enough resources to reach the goals and you don't evaluate through analytics whether you're achieving those goals.

Website owners recognized the value of a high ranking and visibility in search engine results,[6] creating an opportunity for both white hat and black hat SEO practitioners. According to industry analyst Danny Sullivan, the phrase "search engine optimization" probably came into use in 1997. Sullivan credits Bruce Clay as one of the first people to popularize the term.[7] On May 2, 2007,[8] Jason Gambert attempted to trademark the term SEO by convincing the Trademark Office in Arizona[9] that SEO is a "process" involving manipulation of keywords and not a "marketing service."