Six Sigma

Six Sigma is an IT-appropriate process-improvement methodology, though the fundamental objective is to reduce error s to fewer than 3.4 defects per million executions (regardless of the process). Given the wide variation in IT deliverable s (e.g. Change Management, Problem Management, Capacity Management) and role s and tasks within IT operational environment s, IT managers must determine whether it is reasonable to expect delivery at a Six Sigma level.

Six Sigma is a data-driven approach that supports continual improvement. It is business output driven in relation to customer specification and focuses on dramatically reducing process variation using Statistical Process Control (SPC) measures.

Six Sigma’s objective is the implementation of a measurement-oriented strategy focused on process improvement and defects reduction. A Six Sigma defect is defined as anything outside customer specifications.

There are two primary sub-methodologies within Six Sigma: DMAIC (define, measure, analyse, improve, control) and DMADV (define, measure, analyse, design, verify). The DMAIC process is an improvement method for existing processes for which performance does not meet expectations, or for which incremental improvements are desired. The DMADV process focuses on the creation of new processes.

Defining, measuring and analysing are key activities of CSI.

Since Six Sigma requires data it is important to start capturing data as soon as possible. As previously mentioned if the data is questionable, this is not a problem as it provides the opportunity to analyse why the data doesn’t make sense.

CMMI

Capability Maturity Model Integration (CMMI) is a process improvement approach that provides organizations with the essential elements of effective process measurement. It can be used to guide process improvement across a project, a division or an entire organization. CMMI helps integrate traditionally separate organizational function s, sets process improvement goals and priorities, provides guidance for quality processes and provides a point of reference for appraising current processes.

CMMI uses a hierarchy of five levels, each with a progressively greater capability of producing quality, where each level is described as a level of maturity.

Дата добавления: 2015-10-02