Replaced the app with Next.js, Golang and Auth0 20240619

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© 2023 e-dash Co., Ltd. © 2024 e-dash Co., Ltd. 2 © 2024 e-dash Co., Ltd. ● Developing SaaS for visualizing CO2 emissions ● Startup backed by MITSUI & CO., LTD. ● Established in 2022 ● Actively recruiting Software Engineers Self-Introduction Name：Kohei Sato（kohekohe） Working for：e-dash Co., Ltd. Role：Software Engineer Residence：Nagoya We help customers with decarbonization!

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© 2023 e-dash Co., Ltd. © 2024 e-dash Co., Ltd. 6 What we did? Before After Auth0 Reasons 1. Modern technologies are popular among engineers（Go, Next.js and ECS） 2. Better leave it to the specialist(Auth0)

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© 2023 e-dash Co., Ltd. © 2024 e-dash Co., Ltd. 7 Regarding to authentication[Before] 1. User information is stored in database. 2. Authentication method is implemented by the application. 3. In-memory DB is used for session management. database In-memory DB e-dash app Load Balancer User Login Screen Session management User Infomation etc….

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© 2023 e-dash Co., Ltd. © 2024 e-dash Co., Ltd. 8 E-dash CommonID ・call Auth0 API ・manage Organization Regarding to authentication[After] 1. Move user data to Auth0. 2. Link ALB with Auth0 3. New App for user creation(common id) database e-dash app Load Balancer User Auth0 Login Screen User info(e.g. Name, email, password) Create, delete and update user connected redirected Authentication manage session

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© 2023 e-dash Co., Ltd. © 2024 e-dash Co., Ltd. 9 Flow when integrating ALB with Auth0 e-dash app Load Balancer User Auth0 Access Token ID Token Refresh Token Header: x-amzn-oidc-accesstoken(Access Token) x-amzn-oidc-data(User Claim) x-amzn-oidc-identity(userID) Session Cookie ① authentication by Auth0 ② issue tokens ④ http request w/ headers ③ issue cookie

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© 2023 e-dash Co., Ltd. © 2024 e-dash Co., Ltd. 10 © 2024 e-dash Co., Ltd. The hardest part was transferring all user data from MySQL to Auth0. database Auth0 UserData Migration Tool(go) get mysql dump data call API to create users

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© 2023 e-dash Co., Ltd. © 2024 e-dash Co., Ltd. 11 New version released!! about 20 engineers were working! Timeline April 2023 May 2023 I joined e-dash. employed engineer was me only started to implement new app April 2024 Now implementing new functions & updating application! still hiring engineers!! Jan 2024 The originally planned release date😂