Waldek Mastykarz in run.events Speaker Directory

European AI and Cloud Summit 2025

26/05/2025, Congress Center Düsseldorf
Düsseldorf, Germany

Build apps that don't fail in production

cloud

ai

testing

apis

You test your app to make sure it works as intended. But what if the APIs you use fail? Will your app lose your customer's data? How do you test for this? Simulating API failures is hard. You end up writing code that you won't be shipping or worse: not testing at all. That's why we built Dev Proxy, to simulate API errors so that you can easily test your app without changing your code. Dev Proxy is an API simulator that helps you effortlessly test your app beyond the happy path. Join us to learn how to: • See how your app responds to API errors, without changing your app’s code, so that you can build more robust apps and don't lose customers' data. • Verify how your app handles API rate limits, so that you can avoid getting throttled and improve the user experience for your customers. • See how your app handles slow APIs, so that you can implement the necessary affordances, and make your app more user-friendly. • Quickly stand-up mock APIs without writing a line of code, so that you can focus on building your app instead of writing code you won't be shipping. • Improve your app with contextual guidance on how you use APIs, to make your app even better. • And more...

European Collaboration Summit 2024

14/05/2024, Rheinmain Congresscenter
Wiesbaden, Germany

Build apps that don't fail in production

microsoft-365

development

microsoft-graph

sharepoint-online

testing

apis

You test your app to make sure it works as intended. But what if the APIs you use fail? Will your app lose your customer's data? How do you test for this? Simulating API failures is hard. You end up writing code that you won't be shipping or worse: not testing at all. That's why we built Dev Proxy, to simulate API errors so that you can easily test your app without changing your code. Dev Proxy is an API simulator that helps you effortlessly test your app beyond the happy path. Join us to learn how to: • See how your app responds to API errors, without changing your app’s code, so that you can build more robust apps and don't lose customers' data. • Verify how your app handles API rate limits, so that you can avoid getting throttled and improve the user experience for your customers. • See how your app handles slow APIs, so that you can implement the necessary affordances, and make your app more user-friendly. • Quickly stand-up mock APIs without writing a line of code, so that you can focus on building your app instead of writing code you won't be shipping. • Improve your app with contextual guidance on how you use APIs, to make your app even better.

download Dev Proxy

Developer Advocate

Netherlands

Build apps for Microsoft 365

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Connect with Waldek

A Look Back at Past Speaking Engagements

European AI and Cloud Summit 2025

Build apps that don't fail in production

European Collaboration Summit 2024

Build apps that don't fail in production

European Collaboration Summit 2023

Celebrating 10 years of European Collaboration Summit with Microsoft

European Collaboration Summit 2023

Build resilient production apps with Microsoft Graph

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