Short codes offer very similar features to a dedicated virtual number, but are short mobile numbers that are usually 5-6 digits. Their length and availability depend on each country. These are usually more expensive and are commonly used by enterprises and governmental organisations. For mass messaging, short codes are preferred over a dedicated virtual number because of their higher throughput, and are great for time-sensitive campaigns and emergencies.[11]
What has changed in 2018 is that technology is allowing us to deliver on the purest essence of SEO. Whether via a mobile screen or a digital home assistant, our job is to ensure that our content can be discovered and served as seamlessly as possible. The addition of AI and machine learning into search algorithms means that there are no shortcuts to success; the best content starts to rise to the top over time.
In this new world of digital transparency brands have to be very thoughtful in how they engage with current and potential customers. Consumers have an endless amount of data at their fingertips especially through social media channels, rating and review sites, blogs, and more. Unless brands actively engage in these conversations they lose the opportunity for helping guide their brand message and addressing customer concerns.
SEO is not an appropriate strategy for every website, and other Internet marketing strategies can be more effective like paid advertising through pay per click (PPC) campaigns, depending on the site operator's goals. Search engine marketing (SEM), is practice of designing, running, and optimizing search engine ad campaigns.[54] Its difference from SEO is most simply depicted as the difference between paid and unpaid priority ranking in search results. Its purpose regards prominence more so than relevance; website developers should regard SEM with the utmost importance with consideration to PageRank visibility as most navigate to the primary listings of their search.[55] A successful Internet marketing campaign may also depend upon building high quality web pages to engage and persuade, setting up analytics programs to enable site owners to measure results, and improving a site's conversion rate.[56] In November 2015, Google released a full 160 page version of its Search Quality Rating Guidelines to the public,[57] which now shows a shift in their focus towards "usefulness" and mobile search. In recent years the mobile market has exploded, overtaking the use of desktops as shown in by StatCounter in October 2016 where they analysed 2.5 million websites and 51.3% of the pages were loaded by a mobile device [58]. Google has been one of the companies that have utilised the popularity of mobile usage by encouraging websites to use their Google Search Console, the Mobile-Friendly Test, which allows companies to measure up their website to the search engine results and how user-friendly it is.

3. User participation mode is mainly applied to website transplantation and brand APP. The company publishes its own brand APP to the APP store for users to download, so that users can intuitively understand the enterprise or product information better. As a practical tool, this APP brings great convenience to users' life. User reference mode enables users to have a more intimate experience, so that users can understand the product, enhance the brand image of the enterprise, and seize the user's heart.