Lean software development

Lean software development is a software development methodology that uses lean manufacturing concepts. Originated from among supporters of the concept of flexible development methodology.

Origin

First covered in the eponymous book (Eng. Lean Software Development ) Mary Poppendick and Toma Poppendik. The book presents the traditional principles of lean manufacturing in relation to software development, as well as a set of 22 tools (practices) and their comparison with a flexible development methodology. Mary and Tom participated in a number of different conferences dedicated to Agile techniques, which explains the fame of the concept of lean manufacturing among the community of agile development methodology.

Principles

• Loss exclusion Losses are everything that does not add value to the consumer. In particular: excessive functionality; waiting (pause) in the development process; fuzzy requirements; bureaucratization; slow internal communication.
• Emphasis on learning. Short development cycles, early testing, frequent feedback with the customer.
• Extremely delayed decision making. The decision should not be made on the basis of assumptions and forecasts, but after the discovery of essential facts.
• Extremely fast delivery to the customer. Short iterations.
• Team motivation. You can not consider people solely as a resource. People need more than a list of tasks.
• Integration. To transfer the complete information to the customer. Strive for holistic architecture. Refactoring.
• Holistic vision. Standardization, establishing relationships between developers. The separation of the developers of the principles of frugality. “Think broadly, do little, err quickly; learn fast. "

Practices

Some practices of lean development are similar to the practices of rapid development, and some are somewhat different. Examples of practices:

• Loss Detection ("en: Muda (Japanese term)")
• Systematic Value Stream Mapping
• Theory of limitations
• "Exhaust" system (Kanban)
• Queuing Theory
• Motivation
• Measurements