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NoEstimates Scrum En
This is the presentation in Regional Scrum Gathering Tokyo 2020
Ikuo Suyama
January 08, 2020
Transcript
103 slides
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/PUPOMZFTUJNBUFT #VUBMTPQMBOOJOHJTOFFEFE GPSNBLJOHEFDJTJPOT Estimating and planning are not just
about determining an appropriate deadline or schedule. Planning— especially an ongoing iterative approach to planning—is a quest for value. A good plan is one that stakeholders find sufficiently reliable that they can use it as the basis for making decisions. 8IZ%P8F/FFE&TUJNBUJPO —Agile Estimating and Planning -
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It is significant to me that much of why we
do estimates is that we need to make decisions: To decide something. In other words, it looks to me that what we need are decisions , not estimates. 8PPEZ;VJMM8IZEPXFOFFEFTUJNBUFT -
✓ Product Backlog items have the attributes of a description,
order, estimate, and value. ✓ Product Backlog refinement is the act of adding detail, estimates, and order to items in the Product Backlog. 4DSVN"SUJGBDUT 1SPEVDU#BDLMPH 1#*"UUSJCVUF 8IBUXFOFFE GSPNFTUJNBUJPO ✓All incomplete Product Backlog Items are re-estimated and put back on the Product Backlog. The work done on them depreciates quickly and must be frequently re- estimated. 4DSVN&WFOUT $BODFMMJOHB4QSJOU 1#*FTUJNBUFTTIPVMECFVQEBUFEGSFRVFOUMZ BMXBZTVQUPEBUF *OPSEFSUPQSJPSJUJ[F -
✓The input to this meeting is the Product Backlog, the
latest product Increment, projected capacity of the Development Team during the Sprint, and past performance of the Development Team. The number of items selected from the Product Backlog for the Sprint is solely up to the Development Team. 4DSVN&WFOUT 4QSJOU1MBOOJOH 5PQJD0OF XFTIPVMEEFUFSNJOFDBQBDJUZ CZQBTUQFSGPSNBODF 1FPQMFXIPBDUVBMMZXPSLEPFTUJNBUJPO BOEDPNNJUUPJU ✓ More precise estimates are made based on the greater clarity and increased detail; ✓ The Development Team is responsible for all estimates. The Product Owner may influence the Development Team by helping it understand and select trade-offs, but the people who will perform the work make the final estimate. 5IBUTUSVF 4DSVN"SUJGBDUT 1SPEVDU#BDLMPH -
✓As new work is required, the Development Team adds it
to the Sprint Backlog. As work is performed or completed, the estimated remaining work is updated. ✓At any point in time in a Sprint, the total work remaining in the Sprint Backlog can be summed. *OPSEFSUPNPOJUPSQSPHSFTT 4DSVN"SUJGBDUT 4QSJOU#BDLMPH 4DSVN"SUJGBDUT 4QSJOU#BDLMPH .POJUPSJOH4QSJOU1SPHSFTT ✓The Development Team usually starts by designing the system and the work needed to convert the Product Backlog into a working product Increment. Work may be of varying size, or estimated effort. 4DSVN&WFOUT 4QSJOU1MBOOJOH 4#*BMTPOFFETFTUJNBUFT -
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Monte Carlo methods, or Monte Carlo experiments, are a broad
class of computational algorithms that rely on repeated random sampling to obtain numerical results. &YQFSJNFOUBM.POUF$BSMP.FUIPE 4JNVMBUJOHXIBUXJMMIBQQFO GSPNUIFQBTUUSFOE %POUUSZUPTFDPOEHVFTT.FBTVSF .POUF$BSMPNFUIPE8JLJQFEJB -
On the same thing... At the same time... In the
same place... On the same computer... —Mob Programming A Whole Team Approach" / Agile 2014, Woody Zuill .PC1SPHSBNNJOH -
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(or no) external dependencies Tams who limit WIP (eg. kanban teams) Teams who do batch iterations (eg. Scrum teams) Teams who do large batches (waterfall) -
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#1 Reason we miss deadlines We START too late 4UBSU&BSMZ
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Thank You for Your Kind Attention! UXJUUFS!NBSUJO@MPWFS@TF Thank you for
English proof reading! Arnab Gupta, Hideaki Oshima,ɹ Cherifa Mansoura Thank you for meaningful feedback! Koichi Yoshida, Nobuaki Miura, Hiroki Konishi, Minoru Yokomichi -
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