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
From a model-building perspective, the 4 Ps has attracted a number of criticisms. Well-designed models should exhibit clearly defined categories that are mutually exclusive, with no overlap. Yet, the 4 Ps model has extensive overlapping problems. Several authors stress the hybrid nature of the fourth P, mentioning the presence of two important dimensions, "communication" (general and informative communications such as public relations and corporate communications) and "promotion" (persuasive communications such as advertising and direct selling). Certain marketing activities, such as personal selling, may be classified as either promotion or as part of the place (i.e., distribution) element. Some pricing tactics, such as promotional pricing, can be classified as price variables or promotional variables and, therefore, also exhibit some overlap. What is Digital Marketing?
In the 1990s, the term Digital Marketing was first coined,. With the debut of server/client architecture and the popularity of personal computers, the Customer Relationship Management (CRM) applications became a significant factor in marketing technology. Fierce competition forced vendors to include more service into their software, for example, marketing, sales and service applications. Marketers were also able to own huge online customer data by eCRM software after the Internet was born. Companies could update the data of customer needs and obtain the priorities of their experience. This led to the first clickable banner ad being going live in 1994, which was the "You Will" campaign by AT&T and over the first four months of it going live, 44% of all people who saw it clicked on the ad.
Price refers to how much the company will sell the product for. When establishing a price, companies must consider the unit cost price, marketing costs, and distribution expenses. Companies must also consider the price of competing products in the marketplace and whether their proposed price point is sufficient to represent a reasonable alternative for consumers.
The category/brand development index is a method used to assess the sales potential for a region or market and identify market segments that can be developed (i.e. high CDI and high BDI). In addition, it may be used to identify markets where the category or brand is under-performing and may signal underlying marketing problems such as poor distribution (i.e. high CDI and low BDI).
Marketing is the process of teaching consumers why they should choose your product or service over those of your competitors, and is a form of persuasive communication. It is made up of every process involved in moving a product or service from your business to the consumer. Marketing includes creating the product or service concept, identifying who is likely to purchase it, promoting it, and moving it through the appropriate selling channels. There are three primary purposes of marketing:
To do that, you need a consolidated view of customer preferences and expectations across all channels – web, social media, mobile, direct mail, point of sale, etc. Retailers do this using omnichannel retail analytics. Marketers can use this information to create and anticipate consistent, coordinated customer experiences that will move customers along in the buying cycle. The deeper your customer insight into behavior and preferences, the more likely you are to engage them in lucrative interactions.
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). 
Commodity analysis studies the ways in which a product or product group is brought to market. A commodity analysis of milk, for example, traces the ways in which milk is collected at individual dairy farms, transported to and processed at local dairy cooperatives, and shipped to grocers and supermarkets for consumer purchase. Institutional analysis describes the types of businesses that play a prevalent role in marketing, such as wholesale or retail institutions. For instance, an institutional analysis of clothing wholesalers examines the ongoing concerns that wholesalers face in order to ensure both the correct supply for their customers and the appropriate inventory and shipping capabilities. Finally, a functional analysis examines the general tasks that marketing performs. For example, any marketing effort must ensure that the product is transported from the supplier to the customer. In some industries this transportation function may be handled by a truck, while in others it may be done by mail or e-mail, facsimile, television signal, the Internet, or airline. All these institutions perform the same function.
This type of marketing strategy makes the use of your existing customers to get new customers on board. You pay some incentive or benefits to your customers if they ask their friends to buy your product or service. People usually do word-of-mouth marketing to get the benefit. The amount you pay to them is quite small in front of the returns you are getting. Find the way to keep the track of referrals done by your customers before giving them benefits.
Growth of a business is critical for business success. A firm may grow by developing the market or by developing new products. The Ansoff product and market growth matrix illustrates the two broad dimensions for achieving growth. The Ansoff matrix identifies four specific growth strategies: market penetration, product development, market development and diversification.
Digital marketing poses special challenges for its purveyors. Digital channels are proliferating rapidly, and digital marketers have to keep up with how these channels work, how they're used by receivers, and how to use these channels to effectively market their products or services. In addition, it's becoming more difficult to capture receivers' attention, because receivers are increasingly inundated with competing ads. Digital marketers also find it challenging to analyze the vast troves of data they capture and then exploit this information in new marketing efforts.
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."
The development of digital marketing is inseparable from technology development. One of the key points in the start of was in 1971, where Ray Tomlinson sent the very first email and his technology set the platform to allow people to send and receive files through different machines. However, the more recognisable period as being the start of Digital Marketing is 1990 as this was where the Archie search engine was created as an index for FTP sites. In the 1980s, the storage capacity of computer was already big enough to store huge volumes of customer information. Companies started choosing online techniques, such as database marketing, rather than limited list broker. These kinds of databases allowed companies to track customers' information more effectively, thus transforming the relationship between buyer and seller. However, the manual process was not as efficient.
YouTube has become the second most popular search engine and a lot of users are turning to YouTube before they make a buying decision, to learn something, read a review, or just to relax. There are several video marketing platforms, including Facebook Videos, Instagram, or even TikTok to use to run a video marketing campaign. Companies find the most success with video by integrating it with SEO, content marketing, and broader social media marketing campaigns.
Taking these statistics into consideration, online marketing is a critical element of a complete marketing strategy. It is vital for marketers to use online tools such as social media and digital advertising, both on website and mobile device applications, and internet forums. Considering an appropriate distribution channel for products purchased online is also an important step. The psychology of digital marketing. Rory Sutherland, Ogilvy