7.1.Software development lifecycle

Software development lifecycle

Scrum е може би най-използваната agile методология за разработка на софтуер

Work phases are generally separated to:
-	Idea
-	Planning
-	Creating
-	Testing
-	Deploying
Горния процес обикновено е итеративен при гъвкавите методологии

Environments – areas where product can be built, distributed, installed, configured and tested:
-	Development environment
-	Common build environment
-	Integration testing environment
-	User acceptance environment
-	Production environment

В Development среда се разработва софтуера и след това се тества. Продукта пак бива изтестван в Staging среда и чак тогава ако тестването е успешно, продукта отива в Production средата
! Staging средата трябва да е със същите конфигурации като Production средата

A development methodology is a set of practices and procedures for organizing the software development process
-	A set of rules that developers have to follow
-	A set of conventions the organization decides to follow
-	A systematical, engineering approach for organizing and managing software products
Heavyweight and agile methodologies:
-	Heavy methodologies rely on formal procedures and documents
-	Agile methodologies rely on small iterations and less formalities

Често полезни промени, като рефакториране, не се правят по продукта, защото  тези промени не се счиатат за разумни, според manager-ите на проекта, например

Agile methodologies:
-	Scrum
-	Kanban
-	Lean Software Development
-	eXtreme programming (XP)
-	и др.

Scrum – an iterative and incremental agile software development methodology for managing product development
Scrum roles:
-	Scrum master – maintains the Scrum process
-	Product owner – represents the stakeholders
-	Team – a group of about 7 people
o	The team does the actual development: analysis, design, implementation, testing, etc.

Scrum terminology:
-	Sprint
o	An iteration in Scrum
o	Usually few weeks
-	Product Backlog – попринцип не е възможно да се измислят всички неща (функционалности), които ще трябва да се направят за конкретния продукт
o	All features that have to be developed
-	Sprint Backlog
o	All features planned for the current sprint

Scrum practices:
-	Sprint planning meeting
-	Daily Scrum stand-up meeting – до 15 минути
-	Sprint review meeting