Prototyping and agile development

@robb1e Robbie Clutton Prototyping & agile development Thursday, June 27,
13

@robb1e History lesson Thursday, June 27, 13

@robb1e Before agile Thursday, June 27, 13

Thursday, June 27, 13

$10bn Thursday, June 27, 13

@robb1e • Request for tender announced • Cheapest bid usually
wins • Pay company several $m for licenses • Then another few $m for conﬁguration • By the time it’s up and running, it’s out of date Vendor driven development Thursday, June 27, 13

@robb1e Some marketing genius No one ever got ﬁred for
hiring IBM Thursday, June 27, 13

@robb1e • Software replaces paper-based system • Aims to improve
dispatch time • Keep track of where ambulance (units) are so closest can be sent to location • Big bang release 1992 London Ambulance Dispatch disaster http://en.wikipedia.org/wiki/London_Ambulance_Service#System_failures Thursday, June 27, 13

@robb1e • Multiple units sent to the same address •
No units sent to other addresses • Calls got lost • System became congested • Upto 30 avoidable deaths attributed to software issues 1992 London Ambulance Dispatch disaster http://en.wikipedia.org/wiki/London_Ambulance_Service#System_failures Thursday, June 27, 13

@robb1e The long road to agile Thursday, June 27, 13

Toyota Production System - 1948-1975 Agile manifesto - 2001 Lean
Software Development - 2003 Lean startups - 2011 Thursday, June 27, 13

@robb1e Toyota production system Thursday, June 27, 13

@robb1e • Developed between 1948 and 1975 • Originally called
“Just in time production” • Goals are all about eliminating waste • Principles are about continuous improvement, people and process Toyota Production System http://en.wikipedia.org/wiki/Toyota_Production_System Thursday, June 27, 13

@robb1e Agile manifesto Thursday, June 27, 13

@robb1e Agile manifesto http://agilemanifesto.org/ Individuals and interactions over processes and
tools Working software over comprehensive documentation Customer collaboration over contract negotiation Responding to change over following a plan That is, while there is value in the items on the right, we value the items on the left more. Thursday, June 27, 13

@robb1e http://www.agilemodeling.com/essays/costOfChange.htm Thursday, June 27, 13

@robb1e Thursday, June 27, 13

@robb1e • Iteration planning • Daily stand-ups • Customer acceptance
• Retrospectives Agile process Agile processes enable customer collaboration and empower the individual Thursday, June 27, 13

@robb1e • Test driven development • Pair programming • Continuous
integration • Automating everything • Continuous refactoring Agile engineering Agile engineering practices promote working software early and enables easier change Thursday, June 27, 13

process practices #win Thursday, June 27, 13

@robb1e Kellan Elliot McCrea, 2012 Change is what you should
be optimizing for. You never know what's coming next. Thursday, June 27, 13

@robb1e Lean software development Thursday, June 27, 13

@robb1e • Eliminate waste • Amplify learning • Decide as
late as possible • Deliver as fast as possible • Empower the team • Build integrity in • See the whole Lean software development http://en.wikipedia.org/wiki/Lean_software_development Thursday, June 27, 13

@robb1e Mary and Tom Poppendieck Think big, act small, fail
fast, learn rapidly Thursday, June 27, 13

@robb1e Lean startup Thursday, June 27, 13

@robb1e • Minimum viable product • Continuous deployment • Split
testing • Actionable metrics • Pivot Lean startup http://en.wikipedia.org/wiki/Lean_Startup Thursday, June 27, 13

@robb1e The goal of a lean startup is to move
through the build-measure- learn feedback loop as quickly as possible Thursday, June 27, 13

@robb1e Prototyping Thursday, June 27, 13

http://en.wikipedia.org/wiki/Airbus_A350_XWB Thursday, June 27, 13

http://www.bikeradar.com/news/article/specialized-unveils-in-house-wind-tunnel-37363/ Thursday, June 27, 13

@robb1e Can you build a high ﬁdelity prototype for a
software application? Thursday, June 27, 13

http://arielwaldman.com/projects/interaction-design/ Thursday, June 27, 13

http://astridforscreen.wordpress.com/2010/09/05/paper-prototyping/ Thursday, June 27, 13

@robb1e • Dodgeball => Foursquare • MySpace => Facebook •
Rocket Internet Ideas/others can be prototypes too http://en.wikipedia.org/wiki/Dodgeball_(service) http://www.rocket-internet.de/ http://www.businessweek.com/articles/2012-02-29/the-germany-website-copy-machine Thursday, June 27, 13

@robb1e Beyond prototyping Thursday, June 27, 13

@robb1e Most developers Prototypes tend to ﬁnd a way into
production Thursday, June 27, 13

@robb1e Steel thread Thursday, June 27, 13

@robb1e Kent Beck Make it work, make it right, make
it fast Thursday, June 27, 13

@robb1e • Features that have hypotheses • Hypotheses that can
be easily validated • Code that is always production ready • Code that is easy to change Goals Thursday, June 27, 13

@robb1e Crazy Egg Story Thursday, June 27, 13

@robb1e 10am deploy CrazyEgg Thursday, June 27, 13

@robb1e 5pm review CrazyEgg Thursday, June 27, 13

@robb1e Users’ clicking headers that are not links Thursday, June
27, 13

@robb1e You could feel the users frustration Thursday, June 27,
13

@robb1e Simple user testing can pay dividends Lesson Thursday, June
27, 13

@robb1e • CrazyEgg.com • UserTesting.com • SilverbackApp.com • LeanLaunchLab.com •
Trello.com Tools Thursday, June 27, 13

@robb1e Funnels, user testing, hypotheses and validations Story Thursday, June
27, 13

@robb1e Product with wizard like pages which pre-selected default services

@robb1e Changes to the basket updates price in real-time Thursday,
June 27, 13

@robb1e Funnel showed massive drop oﬀ at a certain step

@robb1e In person user testing to discover why the drop
oﬀ was occurring Thursday, June 27, 13

@robb1e Create hypothesis to stop users leaving at this junction

@robb1e Implement change: allow users to use default or create
own Thursday, June 27, 13

@robb1e Review funnel after deployment Thursday, June 27, 13

@robb1e Learn what is blocking the users Lesson Thursday, June
27, 13

@robb1e • KissMetrics.com • MixPanel.com • StatsD (Etsy) • Cube
(Square) Tools Thursday, June 27, 13

@robb1e Always be validating Take away Thursday, June 27, 13

@robb1e Was that really the best use of your time?
Story Thursday, June 27, 13

@robb1e During technical due diligence for an acquisition Thursday, June
27, 13

@robb1e The company had built their own message queue Thursday,
June 27, 13

@robb1e Almost all transactions passed through this queue Thursday, June
27, 13

@robb1e Not buying a message queue company Thursday, June 27,
13

@robb1e - Joel Spolsky, 2001 "If it's a core business
function - do it yourself, no matter what." Thursday, June 27, 13

@robb1e Time is the most expensive out going Bonus Thursday,
June 27, 13

@robb1e • ﬁlepicker.io / embed.ly • heroku.com • sendgrid.com /
mailchimp.com • so many more... Tools Thursday, June 27, 13

@robb1e Real-time vs near-time Story Thursday, June 27, 13

@robb1e Trading system which updates users’ screen every 10 seconds

@robb1e Lots of number crunching and message queues Thursday, June
27, 13

@robb1e Did some in the ﬁeld research Thursday, June 27,
13

@robb1e Traders only checked values every few minutes Thursday, June
27, 13

@robb1e This was not high volatile trading http://www.boldjack.com/wp-content/uploads/2012/01/wall_street4.jpg Thursday, June
27, 13

@robb1e Reduced complexity of the product Thursday, June 27, 13

@robb1e Ron Jeﬀeries, ~2005 Always implement things when you actually
need them, never when you just foresee that you need them Thursday, June 27, 13

@robb1e Buy vs build Story Thursday, June 27, 13

@robb1e $50 a month is really expensive for this hosted
service We can build it ourselves and get exactly the features we need Thursday, June 27, 13

@robb1e Can you build the widget service yourself in that
time? Thursday, June 27, 13

@robb1e Are you in the widget business? Thursday, June 27,
13

@robb1e Paul Hammond, 2012 Hosted services are usually cheaper and
better than anything you will build. Use them. Thursday, June 27, 13

@robb1e Focus on your diﬀerentiators Bonus Thursday, June 27, 13

@robb1e Mary and Tom Poppendieck Think big, act small, fail
fast, learn rapidly Thursday, June 27, 13

@robb1e Q/A Thursday, June 27, 13

Prototyping and agile development

Prototyping and agile development

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