Difference between Scrum and Six Sigma

Prerequisite : Agile Development Model , Lean Software Development

1. Scrum:

Scrum is a lightweight framework for agile development. It is subset of Agile Software development process which is nothing but an iterative and incremental software development technology.

Scrum can be defined as an assembling of peoples and that represents a teamwork. A group of ten or less than ten peoples in which they have specific skills to perform their own task in a particular era. Scrum was introduced to develop, deliver and for satisfying the products in a multiplex habitat.

The team of scrum consists of a product owner, a scrum Master and the developers. It mainly focuses on the product and other roles as well.

1. Product Owner : Product owner represents the product’s stakeholder and it manages the requirement of the customer, also focuses on the productivity and betterment of business. This is the most important role which handles both the business sides as well as the developer’s side in the scrum team.
2. Developers : Developers plays a vital role here; they manage all the technical part for growth of the business. They also convey to the researchers, architects, designers, data specialist, analysts, engineers, programmer, for developing for developing or improvement of the product.
3. Scrum Master : Scrum master is responsible for removing the obstacles during the production or delivering. It also ensures that the scrum framework is obeying the methodologies of business or not and also in the growth of production. Scrum mainly helps the product owner to keep the backlog of the product, well-being of the business.

Workflow of Scrum :

In scrum workflow, it requires several steps those are:

1. Sprint Planning : In this method the product owner and the developers discussed together that which product backlog items should be given to the sprint. This sprint planning focuses on the correct executing and removing error to get a sprint goal and backlog.
2. Daily Scrum : Daily scrum given the overview of sprint goal. The developers with lack of their time they can check quickly and easily, assess the program, activity plans for the next 24 hour. The daily Scrum is limited for only 15 minutes.
3. Sprint Review : This process initiated at the end of the sprint. It authorizes the scrum team, the occasion to present the recent increment done to the stakeholders. It checks the improvement and the work process of the sprint.
4. Sprint Retrospective : This is the final step in sprint. This method ensures that what change could occur in sprint for the Improvement. This process resolves by collaborating all the members such as the product owner, scrum master, the developers, and the entire scrum teams for the betterment and progress of the business.

2. Six Sigma :

Six sigma it is a set of approach and which provide tools for processing and improvement. Six sigma was introduced by an American Engineer named as “Bill Smith” in the year 1986, when Bill Smith was working at Motorola company.

The term six sigma has been derived from statistical method. This mainly focuses on achieving profit and financial status. Six sigma is highly recommended for business growth and increment of profits as well. Based on statistical method we can easily detect the error in the system and also the cause of decrement in the business.

Six sigma always tries to succeed with its dedications and great efforts. It requires whole commitment with the entire organization and keeps everything in a detailed way so that it helps to understand quickly all the strategies. Abolishing dissimilarities, it saves our money and also reduces the faults.

Some of the most used tools for measuring and analyzing the process such as; Control Charts, 5 Whys, Root Cause Analysis, CTQ tree, Statistical Process Control, Process Mapping etc.

Workflow of Six Sigma :

The methodology of six sigma is based on two principles DMAIC and DMADV.

1. DMAIC :

DMAIC is derived from various words and having their specific meanings.

1. D: D stands for defining the customers requirement and project goals.
2. M: Measures the key point on the recent process going on.
3. A: Analyze the data. It analyzes data from the existing one for their benefits.
4. I: Improve processes. Examine and analyze for the progress.
5. C: Control future executions for the accurate outputs so that errors doesn’t comes again.

2. DMADV :

DMADV is also derived from various words.

1. D: Defines company and customer needs.
2. M: Measures CTQs (Characteristics that are critical to quality). It measures the product ability for growth and production and damages.
3. A: Analyze data from our computation.
4. D: Design the new method based on the preceding move.
5. V: Verify the pattern by a pilot run, applicating the new method and provide it to the owner.

Difference between Six sigma and Scrum :

S. No.	Six Sigma	Scrum
01.	Motorola engineers Bill Smith and Mikel Harry developed Six Sigma in 1986.	Ken Schwaber and Jeff Sutherland developed Scrum in the early 1990s.
02.	Six sigma focuses on the method of controlling and similarities through reducing of errors and disparity.	Scrum is based on Agile program management process which focuses to control the software and product development by repetitive progress methods.
03.	It is based on DMAIC and DMADV principle.	It is based on DMAIC and DMADV principle. It is based on Agile principle.
04.	It requires highly changes on the documentation and good strategy.	It only requires changes on the teammate’s interaction and customer partnership.
05.	There is no need of teammates	There is need of good teammates for guidance.
06.	In six sigma there is no need to verify their works to such other departments.	In scrum the process is considered and verified by various departments.
07.	It is ideal for companies working on large scale projects where the requirements and functions/processes are clearly declared.	It is ideal for agile companies which work on projects with changing requirements.
08.	Six sigma improves processes by eliminating waste and variations.	Scrum breaks down the project into short sprints.
09.	Six Sigma strategy is possibly best suitable if your primary objective is to eliminate variation from a routine production process.	The use of scrum may be the best possible choice if your objective is to reduce risk and maximize value in the search for constant improvement.