Building robust apps that use APIs doesn't have to be hard. There are tools that you can use to see for yourself how your app will behave when calling APIs that it uses fails.
Tips and best practices for building applications on Microsoft 365 by Waldek Mastykarz - Microsoft 365 Cloud Developer Advocate

Find a meeting time and schedule a meeting on Microsoft 365
Many work apps need the ability to schedule a meeting with others in their organization. Here's how to do it for apps connected to Microsoft 365.

Show upcoming meetings for a Microsoft 365 user with Microsoft Graph Toolkit
Recently, I showed you how you can build in under 10 minutes a simple personal assistant that shows users meetings they have left for the day. Here's an even easier way to do it using the Microsoft Graph Toolkit.
Show upcoming meetings for a Microsoft 365 user
Learn how you can build a simple personal assistant in under 10 minutes that'll show a Microsoft 365 user the meetings they have left for the day.
Reference sample: Single Page App connected to Microsoft 365
When building apps connected to Microsoft 365, before you can bring in data from Microsoft 365, you need to setup authentication. Here's a reference sample of a Single Page App that shows how to do that.
Build your first Microsoft 365 app in 10 minutes
Learning something new is often daunting, especially when it's something like developing for a new platform. But that doesn't have to be the case. Let me show you, how you can build your first Microsoft 365 app in just 10 minutes.
Customize list forms with SharePoint Framework form customizers
Last week at the Viva Connections & SharePoint Framework Community Call I had the pleasure of presenting how to use the SharePoint Framework to customize list forms. Here's a quick overview of the topics we covered.
Work apps need work data
When you use apps for work, they rarely show you all the data that you need to get the full context of your work. And that's a shame because that information is often readily available to you, and could be integrated into your app.