Personal selling involves an oral presentation given by a salesperson who approaches an individual or a group of potential customers. Personal selling allows for two-way communication and relationship building that can aid both the buyer and the seller in their goals. Personal selling is most commonly seen in business-to-business marketing (e.g.: selling machinery to a factory, selling paper to a print shop), but it can also be found in business-to-consumer marketing (e.g.: selling cars at a dealership). 
They not only come to work and get paid, but they promote your products and thus, help you to generate revenue. They will recommend your products to their family, friends, and acquaintances. they might share about your products on social media and can refer potential employees. Therefore, never make a mistake to ignore your employees while building a market strategy. They can be loyal customers of your business if treated right. The Difference Between Digital Marketing and Traditional Advertising
In the 2000s, with increasing numbers of Internet users and the birth of iPhone, customers began searching products and making decisions about their needs online first, instead of consulting a salesperson, which created a new problem for the marketing department of a company. In addition, a survey in 2000 in the United Kingdom found that most retailers had not registered their own domain address. These problems encouraged marketers to find new ways to integrate digital technology into market development.
Email marketing is still one of the most effective digital marketing channels. Many people confuse email marketing with spam email messages, but that’s not what email marketing is all about. Email marketing is the medium to get in touch with your potential customers or the people interested in your brand. Many digital marketers use all other digital marketing channels to add leads to their email lists and then, through email marketing, they create customer acquisition funnels to turn those leads into customers.
In-game advertising - In-Game advertising is defined as "inclusion of products or brands within a digital game." The game allows brands or products to place ads within their game, either in a subtle manner or in the form of an advertisement banner. There are many factors that exist in whether brands are successful in their advertising of their brand/product, these being: Type of game, technical platform, 3-D and 4-D technology, game genre, congruity of brand and game, prominence of advertising within the game. Individual factors consist of attitudes towards placement advertisements, game involvement, product involvement, flow or entertainment. The attitude towards the advertising also takes into account not only the message shown but also the attitude towards the game. Dependent of how enjoyable the game is will determine how the brand is perceived, meaning if the game isn't very enjoyable the consumer may subconsciously have a negative attitude towards the brand/product being advertised. In terms of Integrated Marketing Communication "integration of advertising in digital games into the general advertising, communication, and marketing strategy of the firm" is an important as it results in a more clarity about the brand/product and creates a larger overall effect.
Positioning concerns how to position a product in the minds of consumers and inform what attributes differentiate it from the competitor's products. A firm often performs this by producing a perceptual map, which denotes similar products produced in the same industry according to how consumers perceive their price and quality. From a product's placing on the map, a firm would tailor its marketing communications to meld with the product's perception among consumers and its position among competitors' offering. 
Marketing is defined by the American Marketing Association as "the activity, set of institutions, and processes for creating, communicating, delivering, and exchanging offerings that have value for customers, clients, partners, and society at large". The term developed from the original meaning which referred literally to going to market with goods for sale. From a sales process engineering perspective, marketing is "a set of processes that are interconnected and interdependent with other functions of a business aimed at achieving customer interest and satisfaction". How to Start a Social Media Marketing Agency (SMMA) 2020 - Digital Marketing Tutorial for Beginners
The functional level relates to departments within the SBUs, such as marketing, finance, HR, production, etc. The functional level would adopt the SBU's strategy and determine how to accomplish the SBU's own objectives in its market. To use the example of the sports goods industry again, the marketing department would draw up marketing plans, strategies and communications to help the SBU achieve its marketing aims.
Companies and nonprofit organizations also use SMS or text messages to send information about their latest promotions or giving opportunities to willing customers. Political candidates running for office also use SMS message campaigns to spread positive information about their own platforms. As technology has advanced, many text-to-give campaigns also allow customers to directly pay or give via a simple text message.
The trick? Find the right influencer in your niche so that you're targeting the right audience. It's not just about spreading your message. It's about spreading your message to the right consumer base. If you can do that properly, then you can likely reach a sizable audience for not much money invested when you think about the potential profit it can return.