Market segmentation consists of taking the total heterogeneous market for a product and dividing it into several sub-markets or segments, each of which tends to be homogeneous in all significant aspects. The process is conducted for two main purposes: better allocation of a firm's finite resources and to better serve the more diversified tastes of contemporary consumers. A firm only possesses a certain amount of resources. Thus, it must make choices (and appreciate the related costs) in servicing specific groups of consumers. Moreover, with more diversity in the tastes of modern consumers, firms are noting the benefit of servicing a multiplicity of new markets.
The process of marketing is that of bringing a product to market, which includes these steps: broad market research; market targeting and market segmentation; determining distribution, pricing and promotion strategies; developing a communications strategy; budgeting; and visioning long-term market development goals. Many parts of the marketing process (e.g. product design, art director, brand management, advertising, inbound marketing, copywriting etc.) involve use of the creative arts.
The product aspects of marketing deal with the specifications of the actual goods or services, and how it relates to the end-user's needs and wants. The product element consists of product design, new product innovation, branding, packaging, labeling. The scope of a product generally includes supporting elements such as warranties, guarantees, and support. Branding, a key aspect of the product management, refers to the various methods of communicating a brand identity for the product, brand, or company. 
Advertising, or promotion, is only one component of your marketing plan. The marketing process begins with the idea for your product and continues until that product is in the hands of a consumer who bought it. Even after a customer has made a purchase, your marketing shouldn't end—a portion of your advertising should be targeted at current customers to ensure they remain customers and increase loyalty.
Strategic planning focuses on the 3C's, namely: Customer, Corporation and Competitors. A detailed analysis of each factor is key to the success of strategy formulation. The 'competitors' element refers to an analysis of the strengths of the business relative to close rivals, and a consideration of competitive threats that might impinge on the business' ability to move in certain directions. The 'customer' element refers to an analysis of any possible changes in customer preferences that potentially give rise to new business opportunities. The 'corporation' element refers to a detailed analysis of the company's internal capabilities and its readiness to leverage market-based opportunities or its vulnerability to external threats.
Gap analysis is a type of higher order analysis that seeks to identify the difference between the organisation's current strategy and its desired strategy. This difference is sometimes known as the strategic gap. Mintzberg identifies two types of strategy namely deliberate strategy and inadvertent strategy. The deliberate strategy represents the firm's strategic intent or its desired path while the inadvertent strategy represents the path that the firm may have followed as it adjusted to environmental, competitive and market changes. Other scholars use the terms realized strategy versus intended strategy to refer to the same concepts. This type of analysis indicates whether an organisation has strayed from its desired path during the planning period. The presence of a large gap may indicate the organisation has become stuck in the middle; a recipe for strategic mediocrity and potential failure. Digital Marketing Course | Digital Marketing Tutorial For Beginners | Digital Marketing |Simplilearn