---
title: なぜYahoo!カレンダーはPHPからKotlinへ技術移行を進めるのか / Devsumi 2018 KANSAI A-4
tags: 
author: [Yahoo!デベロッパーネットワーク](https://convert.docswell.com/user/ydnjp)
site: [Docswell](https://www.docswell.com/)
thumbnail: https://bcdn.docswell.com/page/27VMWD1P7Q.jpg?width=480
description: Developers Summit 2018 KANSAI での登壇資料です
published: September 28, 18
canonical: https://convert.docswell.com/s/ydnjp/Z4RLQZ-2018-09-28-124628
---
# Page. 1

![Page Image](https://bcdn.docswell.com/page/27VMWD1P7Q.jpg)



# Page. 2

![Page Image](https://bcdn.docswell.com/page/5JGGDY2QJL.jpg)



# Page. 3

![Page Image](https://bcdn.docswell.com/page/47QX1MPWJP.jpg)



# Page. 4

![Page Image](https://bcdn.docswell.com/page/KE46RVY1J1.jpg)



# Page. 5

![Page Image](https://bcdn.docswell.com/page/L71VQ365JG.jpg)



# Page. 6

![Page Image](https://bcdn.docswell.com/page/G7WLMPWWJ2.jpg)



# Page. 7

![Page Image](https://bcdn.docswell.com/page/4JZMQK5273.jpg)



# Page. 8

![Page Image](https://bcdn.docswell.com/page/YE6N6QV6EV.jpg)



# Page. 9

![Page Image](https://bcdn.docswell.com/page/GE556RD5E4.jpg)



# Page. 10

![Page Image](https://bcdn.docswell.com/page/972NMD8GJR.jpg)



# Page. 11

![Page Image](https://bcdn.docswell.com/page/DJYPX26GJM.jpg)



# Page. 12

![Page Image](https://bcdn.docswell.com/page/V7N518Z8E8.jpg)



# Page. 13

![Page Image](https://bcdn.docswell.com/page/YJ9Y5KZX73.jpg)



# Page. 14

![Page Image](https://bcdn.docswell.com/page/GJ86YR19ED.jpg)



# Page. 15

![Page Image](https://bcdn.docswell.com/page/LJL94KQM7R.jpg)



# Page. 16

![Page Image](https://bcdn.docswell.com/page/47MZK216JW.jpg)



# Page. 17

![Page Image](https://bcdn.docswell.com/page/P7R6XMLNE9.jpg)



# Page. 18

![Page Image](https://bcdn.docswell.com/page/PJXM6VW8EX.jpg)



# Page. 19

![Page Image](https://bcdn.docswell.com/page/3JKG1QVL7D.jpg)



# Page. 20

![Page Image](https://bcdn.docswell.com/page/LE3NQPM6E5.jpg)



# Page. 21

![Page Image](https://bcdn.docswell.com/page/8EDW9L6M7G.jpg)



# Page. 22

![Page Image](https://bcdn.docswell.com/page/V7P9Z2YQJ8.jpg)



# Page. 23

![Page Image](https://bcdn.docswell.com/page/2JVMWDGPJQ.jpg)



# Page. 24

![Page Image](https://bcdn.docswell.com/page/5EGGDY8QEL.jpg)



# Page. 25

![Page Image](https://bcdn.docswell.com/page/4JQX1M9WEP.jpg)



# Page. 26

![Page Image](https://bcdn.docswell.com/page/K746RVX1E1.jpg)



# Page. 27

![Page Image](https://bcdn.docswell.com/page/LJ1VQ3N5EG.jpg)



# Page. 28

![Page Image](https://bcdn.docswell.com/page/GJWLMP4WE2.jpg)



# Page. 29

![Page Image](https://bcdn.docswell.com/page/4EZMQK22J3.jpg)



# Page. 30

![Page Image](https://bcdn.docswell.com/page/Y76N62667V.jpg)



# Page. 31

![Page Image](https://bcdn.docswell.com/page/G755626574.jpg)



# Page. 32

![Page Image](https://bcdn.docswell.com/page/9J2NM4MGER.jpg)



# Page. 33

![Page Image](https://bcdn.docswell.com/page/DEYPXMXGEM.jpg)



# Page. 34

![Page Image](https://bcdn.docswell.com/page/VJN51W1878.jpg)



# Page. 35

![Page Image](https://bcdn.docswell.com/page/YE9Y5X5XJ3.jpg)



# Page. 36

![Page Image](https://bcdn.docswell.com/page/GE86Y2Y97D.jpg)



# Page. 37

![Page Image](https://bcdn.docswell.com/page/LEL9424MJR.jpg)



# Page. 38

![Page Image](https://bcdn.docswell.com/page/4JMZK8K6EW.jpg)



# Page. 39

![Page Image](https://bcdn.docswell.com/page/PJR6X5XN79.jpg)



# Page. 40

![Page Image](https://bcdn.docswell.com/page/PEXM6K687X.jpg)



# Page. 41

![Page Image](https://bcdn.docswell.com/page/3EKG151LJD.jpg)



# Page. 42

![Page Image](https://bcdn.docswell.com/page/L73NQKQ675.jpg)



# Page. 43

![Page Image](https://bcdn.docswell.com/page/87DW939MJG.jpg)



# Page. 44

![Page Image](https://bcdn.docswell.com/page/VJP9Z4ZQE8.jpg)



# Page. 45

![Page Image](https://bcdn.docswell.com/page/2EVMWXWPEQ.jpg)



# Page. 46

![Page Image](https://bcdn.docswell.com/page/57GGDVDQ7L.jpg)



# Page. 47

![Page Image](https://bcdn.docswell.com/page/4EQX161W7P.jpg)



# Page. 48

![Page Image](https://bcdn.docswell.com/page/KJ46R4R171.jpg)



# Page. 49

![Page Image](https://bcdn.docswell.com/page/LE1VQ4Q57G.jpg)



# Page. 50

![Page Image](https://bcdn.docswell.com/page/GEWLMXMW72.jpg)



# Page. 51

![Page Image](https://bcdn.docswell.com/page/47ZMQ6Q2E3.jpg)



# Page. 52

![Page Image](https://bcdn.docswell.com/page/YJ6N62N6JV.jpg)



# Page. 53

![Page Image](https://bcdn.docswell.com/page/GJ556255J4.jpg)



# Page. 54

![Page Image](https://bcdn.docswell.com/page/LE3NQKN5E5.jpg)



# Page. 55

![Page Image](https://bcdn.docswell.com/page/8EDW93WY7G.jpg)



# Page. 56

![Page Image](https://bcdn.docswell.com/page/V7P9Z492J8.jpg)



# Page. 57

![Page Image](https://bcdn.docswell.com/page/2JVMWXMXJQ.jpg)



# Page. 58

![Page Image](https://bcdn.docswell.com/page/5EGGDVGREL.jpg)



# Page. 59

![Page Image](https://bcdn.docswell.com/page/4JQX16XYEP.jpg)



# Page. 60

![Page Image](https://bcdn.docswell.com/page/K746R46ZE1.jpg)



# Page. 61

![Page Image](https://bcdn.docswell.com/page/LJ1VQ4VDEG.jpg)



# Page. 62

![Page Image](https://bcdn.docswell.com/page/GJWLMXL8E2.jpg)



# Page. 63

![Page Image](https://bcdn.docswell.com/page/4EZMQ6M9J3.jpg)



# Page. 64

![Page Image](https://bcdn.docswell.com/page/Y76N62ND7V.jpg)



# Page. 65

![Page Image](https://bcdn.docswell.com/page/G755625874.jpg)



# Page. 66

![Page Image](https://bcdn.docswell.com/page/9J2NM4NVER.jpg)



# Page. 67

![Page Image](https://bcdn.docswell.com/page/DEYPXMPQEM.jpg)



# Page. 68

![Page Image](https://bcdn.docswell.com/page/VJN51W5278.jpg)



# Page. 69

![Page Image](https://bcdn.docswell.com/page/YE9Y5XYDJ3.jpg)



# Page. 70

![Page Image](https://bcdn.docswell.com/page/GE86Y2657D.jpg)



# Page. 71

![Page Image](https://bcdn.docswell.com/page/LEL94293JR.jpg)



# Page. 72

![Page Image](https://bcdn.docswell.com/page/4JMZK8ZMEW.jpg)



# Page. 73

![Page Image](https://bcdn.docswell.com/page/PJR6X56L79.jpg)



# Page. 74

![Page Image](https://bcdn.docswell.com/page/PEXM6KD67X.jpg)



# Page. 75

![Page Image](https://bcdn.docswell.com/page/3EKG15XGJD.jpg)



# Page. 76

![Page Image](https://bcdn.docswell.com/page/L73NQK5575.jpg)



# Page. 77

![Page Image](https://bcdn.docswell.com/page/87DW93DYJG.jpg)



# Page. 78

![Page Image](https://bcdn.docswell.com/page/VJP9Z4X2E8.jpg)



# Page. 79

![Page Image](https://bcdn.docswell.com/page/2EVMWXLXEQ.jpg)



# Page. 80

![Page Image](https://bcdn.docswell.com/page/57GGDVXR7L.jpg)



# Page. 81

![Page Image](https://bcdn.docswell.com/page/4EQX168Y7P.jpg)



# Page. 82

![Page Image](https://bcdn.docswell.com/page/KJ46R42Z71.jpg)



# Page. 83

![Page Image](https://bcdn.docswell.com/page/LE1VQ4MD7G.jpg)



# Page. 84

![Page Image](https://bcdn.docswell.com/page/GEWLMX3872.jpg)



# Page. 85

![Page Image](https://bcdn.docswell.com/page/47ZMQ6V9E3.jpg)



# Page. 86

![Page Image](https://bcdn.docswell.com/page/YJ6N625DJV.jpg)



# Page. 87

![Page Image](https://bcdn.docswell.com/page/GJ5562Y8J4.jpg)



# Page. 88

![Page Image](https://bcdn.docswell.com/page/9E2NM4GV7R.jpg)



# Page. 89

![Page Image](https://bcdn.docswell.com/page/D7YPXMVQ7M.jpg)



# Page. 90

![Page Image](https://bcdn.docswell.com/page/VEN51WM2J8.jpg)



# Page. 91

![Page Image](https://bcdn.docswell.com/page/Y79Y5XNDE3.jpg)



# Page. 92

![Page Image](https://bcdn.docswell.com/page/G786Y2K5JD.jpg)



# Page. 93

![Page Image](https://bcdn.docswell.com/page/L7L942Z3ER.jpg)



# Page. 94

![Page Image](https://bcdn.docswell.com/page/4EMZK8VM7W.jpg)



# Page. 95

![Page Image](https://bcdn.docswell.com/page/PER6X52LJ9.jpg)



# Page. 96

![Page Image](https://bcdn.docswell.com/page/P7XM6KP6JX.jpg)



# Page. 97

![Page Image](https://bcdn.docswell.com/page/37KG15DGED.jpg)



# Page. 98

![Page Image](https://bcdn.docswell.com/page/LJ3NQKR5J5.jpg)



# Page. 99

![Page Image](https://bcdn.docswell.com/page/8JDW93YYEG.jpg)



# Page. 100

![Page Image](https://bcdn.docswell.com/page/VEP9Z46278.jpg)



# Page. 101

![Page Image](https://bcdn.docswell.com/page/27VMWX3X7Q.jpg)



# Page. 102

![Page Image](https://bcdn.docswell.com/page/5JGGDV3RJL.jpg)



# Page. 103

![Page Image](https://bcdn.docswell.com/page/47QX165YJP.jpg)



