Porter's Five Forces is a simple but powerful tool that consist of 5 different forces to understand the competitiveness of your business environment, and for identifying your strategy's potential profitability. The five forces are degree of rivalry, threat of entry, threat of substitutions, buyer power, and supplier power. Each force is helpful in their own way to get to know your rivals a lot better and get to know what can happen in your market.
Michael Porter's Five Forces analyze the external and internal environment of a company to increase the awareness of threats and structure of the industry that company competes within. Thus, the Five Forces is an ideal tool which can help companies to maintain their competitiveness with a higher profitability.
Porter’s 5 Forces analysis is a commonly used business theory that identifies the 5 competitive forces of an industry. By identifying and analysing these forces you can determine an industries weaknesses and strengths. Porter recognised the 5 forces in most business markets to be internal rivalry, entry, substitutes and compliments, supplier power and buyer power.
Porter’s 5-Forces Model: A method for examining the competitive environment for a company or industry. It specifies and evaluates threats from new entrants, suppliers, buyers, and substitutes in the arena of competition.
Porter’s Five Forces was next used to determine the competitive environment. The Five Forces method is used to determine a company’s profit potential for a particular industry.
The large multinational corporation I chose is Delta Airlines. Delta Air Lines, Inc. is a major American airline, with its headquarters and largest hub at Hartsfield–Jackson Atlanta International Airport in Atlanta, Georgia. Delta Airlines along with its subsidiaries and regional affiliates operate over 5,400 flights daily and serve an extensive domestic and international network that includes 319 destinations in 54 countries on six continents, as of October 2016. 
Michael Eugene Porter is an economist, author, advisor and a researcher. He is the creator of Porter Five Forces theory, which is a framework for a business. The model “identifies and analyzes five competitive forces that shape every industry, and helps determine an industry 's weaknesses and strengths” (Investopedia LLC, 2016). The five forces are competitive rivalry, bargaining power of buyers, bargaining power of suppliers, threat of new entry, and threat of substitution. This is a very important theory which a business can strengthen their position.
To mitigate the issue surround low cost carriers Delta have created a valuable proposal that would differentiate it from its competitors. Airlines have encountered difficulty in nourishing and maintaining their financial viability, thus opportunities to reconstruct their business model has presented itself through alliances, merger and acquisition. Delta Airlines’ key competitors are United Continental Holdings, Inc., Southwest Airlines Co. and American Airlines Group, Inc. By acquiring American Airlines Delta will not only eliminate one competitor but also improve its market share. Delta will potentially realize more financial gains with the merger along with an increase market presence and the focus point for Delta would be
Porter’s Five Forces is a framework that consists of five competitive forces, threat of entry, power of supplier and buyer, threat of substitution and competitive rivalry. These forces facilitate the analysis of the task environment of an industry or company (Wheelen and Hunger, 2009).
Porter’s Five Competitive Forces Analysis is a framework developed by Michael E. Porter of Harvard Business School for study of industry analysis by analyzing five competitive forces which define industry and its business strategy. These five competitive forces determine the competitive advantages, disadvantages and attractiveness or profitability of industry.
Porter 's Five Forces Model is a critical instrument to break down an outer aggressive environment of the business. The model incorporates threat of entry, the threat of rivalry, the threat of suppliers, the threat of purchasers and threat of substitutes.
The Porter Five forces analysis is a structure for business management developed by Michael Porter in 1979. It uses concepts developed in Industrial Organization economics to derive five forces that determine the attractiveness of a market. Porter referred to these forces as the microenvironment, to contrast it with the more general term microenvironment. They consist of those forces close to a company that affect its ability to serve its customers and make a profit. This concept involves a relationship between competitors within an industry, potential competitors, suppliers, buyers and alternative solutions to the problem being addressed. A change in any of the forces normally requires a company to re-assess the marketplace.
The importance of Porter’s five forces is to identify and analyze the market or industry. Porter (Michael E.) identifies five such forces that can affect the future of company.
The Five Forces Model (developed by Dr. Michael Porter of Harvard University) is a powerful tool for evaluating the competitiveness of your business environment and for identifying your business‘s potential risks and profitability.