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
Needs: Something necessary for people to live a healthy, stable and safe life. When needs remain unfulfilled, there is a clear adverse outcome: a dysfunction or death. Needs can be objective and physical, such as the need for food, water, and shelter; or subjective and psychological, such as the need to belong to a family or social group and the need for self-esteem.
Porter's approach was the dominant paradigm throughout the 1980s. However, the approach has attracted considerable criticism. One important criticism is that it is possible to identify successful companies that pursue a hybrid strategy - such as low cost position and a differentiated position simultaneously. Toyota is a classic example of this hybrid approach. Other scholars point to the simplistic nature of the analysis and the overly prescriptive nature of the strategic choices which limits strategies to just three options. Yet others point to research showing that many practitioners find the approach to be overly theoretical and not applicable to their business.
Market challenger: The market challenger holds the second highest market share in the category, following closely behind the dominant player. Their market posture is generally offensive because they have less to lose and more to gain by taking risks. They will compete head to head with the market leader in an effort to grow market share. Their overall strategy is to gain market share through product, packaging and service innovations; new market development and redefinition of the to broaden its scope and their position within it. Digital marketing
Marketing as a discipline involves all the actions a company undertakes to draw in customers and maintain relationships with them. Networking with potential or past clients is part of the work too, and may include writing thank you emails, playing golf with prospective clients, returning calls and emails quickly, and meeting with clients for coffee or a meal.
According to Porter, these strategies are mutually exclusive and the firm must select one approach to the exclusion of all others. Firms that try to be all things to all people can present a confused market position which ultimately leads to below average returns. Any ambiguity about the firm's approach is a recipe for "strategic mediocrity" and any firm that tries to pursue two approaches simultaneously is said to be "stuck in the middle" and destined for failure.
Collaborative Environment: A collaborative environment can be set up between the organization, the technology service provider, and the digital agencies to optimize effort, resource sharing, reusability and communications. Additionally, organizations are inviting their customers to help them better understand how to service them. This source of data is called User Generated Content. Much of this is acquired via company websites where the organization invites people to share ideas that are then evaluated by other users of the site. The most popular ideas are evaluated and implemented in some form. Using this method of acquiring data and developing new products can foster the organizations relationship with their customer as well as spawn ideas that would otherwise be overlooked. UGC is low-cost advertising as it is directly from the consumers and can save advertising costs for the organisation.
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). 
Digital marketing is defined by the use of numerous digital tactics and channels to connect with customers where they spend much of their time: online. From the website itself to a business's online branding assets -- digital advertising, email marketing, online brochures, and beyond -- there's a spectrum of tactics that fall under the umbrella of "digital marketing." HOW TO BECOME A DIGITAL MARKETING CONSULTANT | My Path, Mistakes and Keys to Success
Email marketing - Email marketing in comparison to other forms of digital marketing is considered cheap; it is also a way to rapidly communicate a message such as their value proposition to existing or potential customers. Yet this channel of communication may be perceived by recipients to be bothersome and irritating especially to new or potential customers, therefore the success of email marketing is reliant on the language and visual appeal applied. In terms of visual appeal, there are indications that using graphics/visuals that are relevant to the message which is attempting to be sent, yet less visual graphics to be applied with initial emails are more effective in-turn creating a relatively personal feel to the email. In terms of language, the style is the main factor in determining how captivating the email is. Using casual tone invokes a warmer and gentle and inviting feel to the email in comparison to a formal style. For combinations; it's suggested that to maximize effectiveness; using no graphics/visual alongside casual language. In contrast using no visual appeal and a formal language style is seen as the least effective method. A DAY IN THE LIFE OF A DIGITAL MARKETING MANAGER | WHAT DOES A DIGITAL MARKETER DO? & SALARIES