Marketing research is a systematic process of analyzing data that involves conducting research to support marketing activities and the statistical interpretation of data into information. This information is then used by managers to plan marketing activities, gauge the nature of a firm's marketing environment and to attain information from suppliers. A distinction should be made between marketing research and market research. Market research involves gathering information about a particular target market. As an example, a firm may conduct research in a target market, after selecting a suitable market segment. In contrast, marketing research relates to all research conducted within marketing. Market research is a subset of marketing research.
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.
During decline, demand for a good begins to taper off, and the firm may opt to discontinue the manufacture of the product. This is so, if revenue for the product comes from efficiency savings in production, over actual sales of a good/service. However, if a product services a niche market, or is complementary to another product, it may continue the manufacture of the product, despite a low level of sales/revenue being accrued. 
For instance, you produce equipment of machines, you are doing a business-to-business space. It requires a different approach than business-to-consumer marketing because there several more steps involved in it. You need to find out the decision makers and find out ways to persuade them to business with you. to do this, you need to build a relationship with them by providing superlative services.
In-game advertising - In-Game advertising is defined as "inclusion of products or brands within a digital game." The game allows brands or products to place ads within their game, either in a subtle manner or in the form of an advertisement banner. There are many factors that exist in whether brands are successful in their advertising of their brand/product, these being: Type of game, technical platform, 3-D and 4-D technology, game genre, congruity of brand and game, prominence of advertising within the game. Individual factors consist of attitudes towards placement advertisements, game involvement, product involvement, flow or entertainment. The attitude towards the advertising also takes into account not only the message shown but also the attitude towards the game. Dependent of how enjoyable the game is will determine how the brand is perceived, meaning if the game isn't very enjoyable the consumer may subconsciously have a negative attitude towards the brand/product being advertised. In terms of Integrated Marketing Communication "integration of advertising in digital games into the general advertising, communication, and marketing strategy of the firm" is an important as it results in a more clarity about the brand/product and creates a larger overall effect. Digital Marketing for Beginners: 7 Strategies That Work