什么是Scrum? （what is Scrum)

Water fall - lengthy process, planning, building, testing, reviewing and deploying ... wrong product to a changing market. 1. Planning should be completed; 2.sent/bounce back, time consuming;

SCRUM = iteration of Plan, build, test, review

Small pieces. Planning - minimum feature set, build as plan, review, get ready to ship - potentially shippable product.
"Sprint" - one to three weeks, keep repeating until it's done.

Scrum的结构 (Scrum Workflow)

Product Backlog -> Sprint Planning -> Sprint Backlog -> Sprint -> Potential Shippable Product -> Sprint Review

3 rules, 3 ceremonies, 3 roles

3 roles -
a. product owners (define features, ideas for product);
b. scrum (running meetings, keep things going)
c. teams (manage to get product done)

3 documents -
product backlog (prioried features - user story- as xx user, I need yy so that zz )
Sprint backlog
burndown chart

3 ceremonies -
Sprint Planning ( 3 roles meet to discuss user story, estimate sizes)
Daily Scrum ( brief stand up meeting)
Sprint Review ( end, demo the work, improvement)