In the past, marketing practice tended to be seen as a creative industry, which included advertising, distribution and selling. However, because the academic study of marketing makes extensive use of social sciences, psychology, sociology, mathematics, economics, anthropology and neuroscience, the profession is now widely recognized as a science, allowing numerous universities to offer Master-of-Science (MSc) programs.
In 1980, Michael Porter developed an approach to strategy formulation that proved to be extremely popular with both scholars and practitioners. The approach became known as the positioning school because of its emphasis on locating a defensible competitive position within an industry or sector. In this approach, strategy formulation consists of three key strands of thinking: analysis of the five forces to determine the sources of competitive advantage; the selection of one of three possible positions which leverage the advantage and the value chain to implement the strategy. In this approach, the strategic choices involve decisions about whether to compete for a share of the total market or for a specific target group (competitive scope) and whether to compete on costs or product differences (competitive advantage). This type of thinking leads to three generic strategies:
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). 
Everyone wants their content to appear first in a search engine using search engine optimization (SEO). Search engine marketing can help you generate a massive return on investment. To do this, you need to have unique, creative, value-driven content so that your content appears appealing to search engine. You can learn online how to use search engine optimization to market your products and services.
The kind of content you create depends on your audience's needs at different stages in the buyer's journey. You should start by creating buyer personas (use these free templates, or try makemypersona.com) to identify what your audience's goals and challenges are in relation to your business. On a basic level, your online content should aim to help them meet these goals, and overcome their challenges. What Is Digital Marketing? | Digital Marketing Tutorial For Beginners | Edureka