As the study of marketing became more prevalent throughout the 20th century, large companies—particularly mass consumer manufacturers—began to recognize the importance of market research, better product design, effective distribution, and sustained communication with consumers in the success of their brands. Marketing concepts and techniques later moved into the industrial-goods sector and subsequently into the services sector. It soon became apparent that organizations and individuals market not only goods and services but also ideas (social marketing), places (location marketing), personalities (celebrity marketing), events (event marketing), and even the organizations themselves (public relations).
A common method of assessing a firm's macro-environment is via a PESTLE (Political, Economic, Social, Technological, Legal, Ecological) analysis. Within a PESTLE analysis, a firm would analyze national political issues, culture and climate, key macroeconomic conditions, health and indicators (such as economic growth, inflation, unemployment, etc.), social trends/attitudes, and the nature of technology's impact on its society and the business processes within the society. 
Digital marketing channels and traditional marketing channels are similar in function that the value of the product or service is passed from the original producer to the end user by a kind of supply chain. Digital Marketing channels, however, consist of internet systems that create, promote, and deliver products or services from producer to consumer through digital networks. Increasing changes to marketing channels has been a significant contributor to the expansion and growth of the sharing economy. Such changes to marketing channels has prompted unprecedented and historic growth. In addition to this typical approach, the built-in control, efficiency and low cost of digital marketing channels is an essential features in the application of sharing economy.
Regardless of who is being marketed to, several factors, including the perspective the marketers will use. These market orientations determine how marketers will approach the planning stage of marketing. This leads into the marketing mix, which outlines the specifics of the product and how it will be sold. This can in turn be affected by the environment surrounding the product , the results of marketing research and market research, and the characteristics of the product's target market.
Unlike most offline marketing efforts, digital marketing allows marketers to see accurate results in real time. If you've ever put an advert in a newspaper, you'll know how difficult it is to estimate how many people actually flipped to that page and paid attention to your ad. There's no surefire way to know if that ad was responsible for any sales at all.
Balancing search and display for digital display ads are important; marketers tend to look at the last search and attribute all of the effectiveness to this. This, in turn, disregards other marketing efforts, which establish brand value within the consumers mind. ComScore determined through drawing on data online, produced by over one hundred multichannel retailers that digital display marketing poses strengths when compared with or positioned alongside, paid search (Whiteside, 2016). This is why it is advised that when someone clicks on a display ad the company opens a landing page, not its home page. A landing page typically has something to draw the customer in to search beyond this page. Things such as free offers that the consumer can obtain through giving the company contact information so that they can use retargeting communication strategies (Square2Marketing, 2012). Commonly marketers see increased sales among people exposed to a search ad. But the fact of how many people you can reach with a display campaign compared to a search campaign should be considered. Multichannel retailers have an increased reach if the display is considered in synergy with search campaigns. Overall both search and display aspects are valued as display campaigns build awareness for the brand so that more people are likely to click on these digital ads when running a search campaign (Whiteside, 2016).
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.
Barney stated that for resources to hold potential as sources of sustainable competitive advantage, they should be valuable, rare and imperfectly imitable. A key insight arising from the resource-based view is that not all resources are of equal importance nor possess the potential to become a source of sustainable competitive advantage. The sustainability of any competitive advantage depends on the extent to which resources can be imitated or substituted. Barney and others point out that understanding the causal relationship between the sources of advantage and successful strategies can be very difficult in practice. Barney uses the term "causally ambiguous" which he describes as a situation when "the link between the resources controlled by the firm and the firm's sustained competitive advantage is not understood or understood only very imperfectly." Thus, a great deal of managerial effort must be invested in identifying, understanding and classifying core competencies. In addition, management must invest in organisational learning to develop and maintain key resources and competencies.
Typically the firm will attempt to leverage those opportunities that can be matched with internal strengths; that is to say the firm has a capability in any area where strengths are matched with external opportunities. It may need to build capability if it wishes to leverage opportunities in areas of weakness. An area of weakness that is matched with an external threat represents a vulnerability, and the firm may need to develop contingency plans.
This refers to how the product gets to the customer; the distribution channels and intermediaries such as wholesalers and retailers who enable customers to access products or services in a convenient manner. This third P has also sometimes been called Place or Placement, referring to the channel by which a product or service is sold (e.g. online vs. retail), which geographic region or industry, to which segment (young adults, families, business people), etc. also referring to how the environment in which the product is sold in can affect sales.  4 Principles of Marketing Strategy | Brian Tracy