The 7 Deadly Sins of Developer Experience (DevRelCon Tokyo)

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1 0 1 1 1 0 1 0 1 1 0 0 1 0 1 0 1 0 1 1 0 1 1 0 1 0 1 1 0 0 1 0 1 0 1 0 1 1 0 1 0 1 0 1 1 1 1 0 0 1 1 1 0 1 0 1 1 0 0 1 0 1 0 1 0 1 1 0 1 0 0 1 1 0 0 1 0 1 0 1 0 1 1 0 1 0 1 0 1 0 1 1 0 1 1 1 0 1 0 1 1 0 0 1 0 1 0 1 0 1 1 0 1 0 1 1 0 1 0 1 1 0 0 1 0 1 0 1 0 1 1 0 1 0 1 0 1 0 1 1 1 0 1 0 1 1 0 0 1 0 1 0 1 0 1 1 0 1 0 1 1 1 0 1 0 1 1 0 0 1 0 1 0 1 0 1 1 0 1 0 1 0 1 0 1 1 1 0 1 0 1 1 0 0 1 0 1 0 1 0 1 1 Developer Experience The 7 Deadly Sins of 1 0 1 0 1 1 1 0 1 0 1 1 0 0 1 0 1

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The 7 Deadly Sins of betta.io Developer Experience

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betta.io Doors are hard

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betta.io Glass doors are very hard

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betta.io APIs + SDKs are harder

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betta.io Way harder

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betta.io

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betta.io Cristiano Betta

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Ǜ betta.io / @cbetta betta.io Cristiano Betta

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Ǜ betta.io / @cbetta ex-PayPal/Braintree betta.io Cristiano Betta

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♥ Developer Experience Ǜ betta.io / @cbetta ex-PayPal/Braintree betta.io Cristiano Betta

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betta.io

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betta.io

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Developer Experience betta.io

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“Developer experience is an extension of UX that focuses on the developer, who can either be the intermediary or, as is the case with many APIs, the end user. Whether or not you focus on DX design, your developers are always experiencing your API, and that experience may either be positive or negative.” betta.io - Jennifer Riggins | @jkriggins Developer Experience

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A platform

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A platform A successful user

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A developer platform A successful developer

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A developer platform A successful developer A fresh new developer

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A developer platform A fresh new developer Long term success A successful developer

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Developer Experience 1st site visit Successful integration Outreach Advocacy

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APIs + SDKs Documentation betta.io

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APIs + SDKs Documentation betta.io

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Tools Information betta.io

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Information Information Information Ǡ betta.io

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So Much Information

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Too Much Information Ȫ

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Too Much Too Soon Information Ȫ

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Too Much Too Soon Ȫ Too Little Information

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Too Much Too Soon Ȫ Too Little Unstructured Information

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Too Much Too Soon Ȫ Too Little Unstructured Unsupportive Information

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Too Much Too Soon Ȫ Too Little Unstructured Unsupportive Information Incomplete ȟ

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Too Much Too Soon Ȫ Too Little Unstructured Unsupportive Information Incomplete ȟ betta.io

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Too Much Too Soon Ȫ Too Little Unstructured Unsupportive Information Incomplete ȟ Tools No control betta.io

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Too Much Too Soon Ȫ Too Little Unstructured Unsupportive Information Incomplete ȟ Tools No control 1 2 3 4 5 6 7 betta.io

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Developer Experience The 7 Deadly Sins of betta.io

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betta.io

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Information Too much Ȫ betta.io

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Performance Overload Ȫ betta.io

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Performance Load betta.io

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Performance Load betta.io

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Physical Load betta.io

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Cognitive Load PULL betta.io

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What does this UI afford? PULL betta.io

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What does this UI afford? PULL Pull to open! betta.io

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What signiﬁers notify my of the affordances? PULL betta.io

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What signiﬁers notify my of the affordances? PULL A handle! betta.io

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Cognitive Dissonance betta.io

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Push? Pull? betta.io

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Cognitive Overload betta.io

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“A situation where the teacher gives too much information or too many tasks to learners simultaneously, resulting in the learner being unable to process this information. In this situation, the […] processing demands of an activity go beyond the […] processing limits of the learner.” betta.io - British Council teachingenglish.org.uk/article/cognitive-overload Cognitive Overload

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Chunking

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80/20 rule

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“Users will use 2̸% of the features of your product 8̸% of the time.” betta.io - Usability Firﬆ usabilityﬁrﬆ.com/glossary/8̸2̸-rule 80/20 rule

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betta.io

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Information Too soon

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Cognitive Load Ȫ betta.io

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Cognitive Load #2 Ȫ betta.io

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betta.io

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betta.io Low Cognitive Load

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betta.io Medium Physical Load

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betta.io Prevent Abuse

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betta.io Are you sure you want to continue? Yes No

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betta.io Are you sure you want to continue? Yes No Low Cognitive Load

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betta.io Are you sure you want to continue? Yes No Some Physical Load

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betta.io _ Your name

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betta.io _ Your name*

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betta.io _ Your name*

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betta.io Who can see this? Your name*

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betta.io Can I change this later? Your name*

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betta.io Developer I am a…* Designer Business Owner Marketer

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betta.io Can I change this later? I am a…* Designer Business Owner Marketer

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betta.io What is this for? I am a…* Designer Business Owner Marketer

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Mental Model betta.io

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How product works How we think it works

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“A mental model is an explanation of someone's thought process about how something works in the real world. It is a representation of the surrounding world, the relationships between its various parts and a person's intuitive perception about his or her own acts and their consequences.” betta.io - Mental Model, Wikipedia Mental Model

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“A ﬆrategy for managing information complexity in which only necessary information is requeﬆed at any given time” betta.io - Universal Principles of Design (2̸1̸) Progressive Disclosure

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Low Cognitive Load

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Hard questions Postponed

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Information Without Structure

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betta.io •Page numbers

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betta.io •Page numbers •Current chapter

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betta.io •Page numbers •Current chapter •Table of content

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betta.io •Page numbers •Current chapter •Table of content •Index

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betta.io •Page numbers •Current chapter •Table of content •Index •Next page

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betta.io •Page numbers •Current chapter •Table of content •Index •Next page •Previous page

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Where am I ?

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Where am I ? Where can I go ?

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Where am I ? Where can I go ? Where did I come from ?

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Where am I ? Where can I go ? Where did I come from ? Sign Posting

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“A diagram that describes the general pattern followed by the eyes when looking at evenly diﬆributed, homogeneous information” betta.io - Universal Principles of Design (2̸1̸) Guttenberg Diagram

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betta.io

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Information Too little

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Information Too late

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Perfection Broken

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Perfection Broken Good Enough

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Documentation

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betta.io client.do.something.awesome(withThis); Documentation

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betta.io client.do.something.awesome(withThis); Documentation Note: withThis needs to be a boolean on Tuesdays and an Integer on every other day. On Sunday’s it also can only be true

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betta.io Progressive Disclosure

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betta.io Progressive Revelation

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betta.io client.do.something.awesome(withThis); Documentation Note: withThis can be a boolean or integer, and is magically converted to the right value depending on the day. Don’t worry, we got you covered!

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betta.io

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Information Without Flow betta.io

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Get Started betta.io

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betta.io

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“A method of creating imagery, emotions, and underﬆanding of events through an interaction between ﬆoryteller and an audience” betta.io - Universal Principles of Design (2̸1̸) Story Telling

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Get Started betta.io

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betta.io Success

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Success? betta.io Email?

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Success? betta.io Email? First API call?

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Success? betta.io Email? First API call? Paying user?

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betta.io Email? First API call? Paying user? Success? Successful user

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“Why? Simply put; No Cuﬆomer Success = No Your Success.” betta.io - Sixteen Ventures sixteenventures.com/cuﬆomer-success-deﬁnition Customer Success

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betta.io

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Information Incomplete ȟ betta.io

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ȟ betta.io Information Testing

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betta.io

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Tools Out of control betta.io

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betta.io

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Unofﬁcial

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Ofﬁcial

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Unofﬁcial

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betta.io Express Checkout

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Unofﬁcial

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“…in reality, whatever people can pull down from their favorite package manager is their developer experience…” betta.io - Square’s Triﬆan Sokol @ DevXCon SF 2̸17 About SDKs

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betta.io UX is hard

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betta.io DX is harder

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betta.io Way harder

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betta.io Prevent Cognitive Overload

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Only Show Information When it makes sense

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Only Ask Questions When needed

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Present Information With Structure

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Present Information On Time

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Tell the best Stories

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betta.io Tell the whole Story

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betta.io Own the whole Story

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Thank you! @cbetta betta.io Cristiano Betta ȶ betta.io

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betta.io Universal Principles Of Design (2010) by William Lidwell and Kritina Holden

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betta.io Signal to Noise Ratio Horror Vacui Readability Wayﬁnding

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betta.io The Design of Everyday Things (2013) by Donald A. Norman

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betta.io Envisioning Information (1990) by Edward R. Tufte

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betta.io The Mom Test (2013) How to talk to customers & learn if your business is a good idea when everyone is lying to you by Rob Fitzpatrick

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Thank you! @cbetta betta.io Cristiano Betta ȶ betta.io