Social media marketing is the use of social media platforms and websites to promote a product or service. Although the terms e-marketing and digital marketing are still dominant in academia, social media marketing is becoming more popular for both practitioners and researchers.
Most social media platforms have built-in data analytics tools, which enable companies to track the progress, success, and engagement of ad campaigns. Companies address a range of stakeholders through social media marketing, including current and potential customers, current and potential employees, journalists, bloggers, and the general public. On a strategic level, social media marketing includes the management of a marketing campaign, governance, setting the scope (e.g. more active or passive use) and the establishment of a firm’s desired social media “culture” and “tone.”
To use social media effectively, firms should learn to allow customers and Internet users to post user-generated content (e.g., online comments, product reviews, etc.), also known as “earned media,” rather than use marketer-prepared advertising copy While often associated with companies, as of 2016, a range of not-for-profit organizations and government organizations are engaging in social media marketing.

Social media use in a business or political context allows all consumers/citizens to express and share an opinion about a company’s products, services or business practices, or a government’s actioins. Each participating customer or non-customer (or citizen) who is participating online via social media becomes part of the marketing department (or a challenge to the marketing effort), as other customers read their positive or negative comments or reviews. Getting consumers and potential consumers (or citizens) to be engaged online is fundamental to successful social media marketing.
With the advent of social media marketing, it has become increasingly important to gain customer interest in products and services, which can eventually be translated into buying behavior (or voting or donating behavior in a political context). New online marketing concepts of engagement and loyalty have emerged which aim to build customer participation and brand reputation.

Twitter
Twitter allows companies to promote their products in short messages known as tweets limited to 140 characters which appear on followers’ Home timelines.[41] Tweets can contain text, Hashtag, photo, video, Animated GIF, Emoji, or links to the product’s website and other social media profiles, etc.[42] Twitter is also used by companies to provide customer service.[43] Some companies make support available 24/7 and answer promptly, thus improving brand loyalty and appreciation.

Facebook
Facebook pages are far more detailed than Twitter accounts. They allow a product to provide videos, photos, and longer descriptions, and testimonials as other followers can comment on the product pages for others to see. Facebook can link back to the product’s Twitter page as well as send out event reminders. As of May 2015, 93% of businesses marketers use Facebook to promote their brand.[44] A study from 2011 attributed 84% of “engagement” or clicks to Likes that link back to Facebook advertising.[45] By 2014, Facebook had restricted the content published from businesses’ and brands’ pages. Adjustments in Facebook algorithms have reduced the audience for non-paying business pages (that have at least 500,000 “Likes”) from 16% in 2012 down to 2% in February 2014.[46] [47][48]

Google+
Google+, in addition to providing pages and some features of Facebook, is also able to integrate with the Google search engine. Other Google products are also integrated, such as Google Adwords and Google Maps. With the development of Google Personalized Search and other location-based search services, Google+ allows for targeted advertising methods, navigation services, and other forms of location-based marketing and promotion. Google+ can also be beneficial for other digital marketing campaigns, as well as social media marketing. Google+ authorship was known to have a significant benefit on a website’s search engine optimization, before the relationship was removed by Google. Google+ is one of the fastest growing social media networks and can benefit almost any business.

LinkedIn
LinkedIn, a professional business-related networking site, allows companies to create professional profiles for themselves as well as their business to network and meet others.[49] Through the use of widgets, members can promote their various social networking activities, such as Twitter stream or blog entries of their product pages, onto their LinkedIn profile page.[50] LinkedIn provides its members the opportunity to generate sales leads and business partners.[51] Members can use “Company Pages” similar to Facebook pages to create an area that will allow business owners to promote their products or services and be able to interact with their customers.[52] Due to spread of spam mail sent to job seeker, leading companies prefer to use LinkedIn for employee’s recruitment instead using different a job portal. Additionally, companies have voiced a preference for the amount of information that can be gleaned from a LinkedIn profile, versus a limited email.