What is ScrumScrum is an empirical process framework designed to solve complex problems. Scrum helps in maximizing the Return on Investment for the products in the complex domain by reducing the Cost of Delay and Cost of Production. Scrum uses a timeboxed approach called Sprint. Sprint is a safe-to-fail experiment that starts with a business hypothesis and ends with validating the hypothesis with feedback from customers. History of ScrumThe word "Scrum" is derived from the game, Rugby. In Rugby, Scrum is a method that involves the players sticking very closely together with their heads down to get possession of the ball. The concept of Scrum is a cross-functional team working together to pass the ball back and forth and reach a distance to win.  In the year 1986, Hirotaka Takeuchi and Ikujiro Nonaka introduced the word Scrum in the context of Product Development in the article "The New New Product Development Game" which appeared in Harward Business Review. They described a new approach to traditional product development based on their case studies that enhance speed and flexibility.  In the early 1990s, Ken Schwaber and Jeff Sutherland worked together to integrate their ideas into a single framework and named it Scrum. In 1995, Jeff and Ken presented a paper describing the Scrum framework at the OOPSLA '95 (Object-oriented Programming, Systems, Languages, and Application) conference in Austin, Texas. After that, Ken Schwaber and Jeff Sutherland refined the framework further with their combined experience. That framework developed to become what we know now as Scrum. Scrum FrameworkTake the example of constructing a house. Consider, an under-construction house is handed over to you with the foundation and pillar set. You can start building it further with the groundwork laid, but you cannot begin living in the house. You will need walls, rooms, interiors, and furniture to live in. You will be provided with the guidelines to construct the rooms, windows, etc. The choice of building it as per your choice in making it a better place to live lies with you.  You have the groundwork, guidelines, and choice. How it turns out to be lies in your hands of you. That's called a framework.  Scrum is a framework, which product development teams can use to self-organize to solve complex and adaptive problems. The idea is to build complex products.  Scrum TeamThere are three roles in Scrum they are Product Owner, Scrum Master, and the Development team. Product Owner: A Product Owner is like the CEO of the product. They represent the business and the users to the Scrum team. They are responsible for maximizing the value of the product.  Development Team: The team which contributes to the development of the product. They could be a Programmer, Test Engineers, Build & Release Engineers, Technical Architects, Technical Writers, etc. They are responsible for turning the needs of the users into a solution that fulfills them.  Scrum Master: The Scrum Master is a systems coach. They are responsible for maximizing the effectiveness of the Scrum Team by helping them improve the system, likeThe process and tools the team useThe way the teams are structuredHow they interact with their dependenciesOrganizational Policies.