My short talk about DX at DevRelCon Tokyo 2019. (The modified version of the original talk given at DevRel Summit 2016 in Seattle)

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Developer Experience
Matters
Tomomi Imura (@girlie_mac)
#DevRelCon

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@girlie_mac
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HELLO!
I am Tomomi Imura
Developer Advocate
at Slack

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@girlie_mac
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Tomomi is as as:
★ Software engineer
★ Technical Writer / Author & Tech editor
★ Speaker
★ Advisor for Code Chrysalis
★ Cat-as-a-Service provider

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@girlie_mac
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User-Experience
“User-Experience (UX) focuses on having a deep
understanding of users, what they need, what they
value, their abilities, and also their limitations.”
Source: usability.gov

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@girlie_mac
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User-Experience
“User-Experience (UX) focuses on having a deep
understanding of users, what they need, what they
value, their abilities, and also their limitations.”
Source: usability.gov
Source: usability.gov

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@girlie_mac
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Developer-Experience
“Developer-Experience (DX) focuses on having a deep
understanding of developers, what they need, what
they value, their abilities, and also their limitations.”

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@girlie_mac
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JaredSpool(CC-BY-SA)

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@girlie_mac
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7-Eleven Coffee machine:
https://twitter.com/ryo_sasaki/
status/560229808362102784

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@girlie_mac
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押し間違えても、
一切保証出きません
No guarantee for your misoperations
You are obligated to pay

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@girlie_mac
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@girlie_mac
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Bad UX: User Reactions
When a person tries to [pour a cup of coffee at 7-Eleven]:
1. Confused
2. Trial & error
3. Frustrated
4. Repeat 2 - 3
5. Totally pissed off

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@girlie_mac
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Bad DX: Developer Reactions
When a dev tries [API with poorly written docs / No code samples]:
1. Confused
2. Trial & error
3. Frustrated
4. Repeat 2 - 3
5. Totally pissed off

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@girlie_mac
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Developer-Centric Products & Offerings
● Developer Platforms
● API
● SDK & tools
● Developer portal
● Docs, tutorials, and “Get started” guides
● Code samples - GitHub code & README

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@girlie_mac
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Bad DX Examples: APIs
● Badly designed APIs
○ Bad naming conventions
○ Inconsistent names, methods, etc.
○ Non-verbose error messages
● Poor documentation
● Operational problems
○ Unstable - 5xx errors

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@girlie_mac
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Bad DX Examples: Docs & Tuts
● No documentation
● Bad browsing experience, no ref links
● No diagrams, screenshots, pictures etc.
● Too complex
● Outdated materials
● Too much marketing content
● PDF everything (Docs != Whitepaper)

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@girlie_mac
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User-Friendliness
https://twitter.com/kaz/status/757733261938298881
redacted!

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@girlie_mac
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Developer-Friendliness

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@girlie_mac
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L10N & I18N
“English is the universal language. Developers should
learn English”
- said, ex-Big Co. Dev Advocate
ARE YOU F’ING SERIOUS!?

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@girlie_mac

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@girlie_mac
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Know Your Developers
★ Get stats / Analytics
○ Where are they?
○ Which OS? etc.
★ Language? Programming lang & Spoken lang
★ Listen to devs in person & online
★ Conduct surveys
★ Read feedbacks (Tweets, Support)
★ Use the data & brainstorm ideas

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@girlie_mac
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Coming soon!
https://api.slack.com/lang/ja-jp
https://qiita.com/organizations/slack

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@girlie_mac
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Developer experience matters!
really

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@girlie_mac
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DEVELOPERS,
DEVELOPERS,
DEVELOPERS!
How can I end my talk about
developer experiences w/o this
perspirational photo of Ballmer!?
LOL!

24. THANKS!
Tomomi Imura
@girlie_mac
girliemac
slideshare.net/tomomi
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25. We’re hiring
Partner Engineer (Japan Lead) - Tokyo
https://slack.com/careers/1536443/partner-engineer-lead