API First development – should you practise it? Of course. In this lightning talk, I’ll show you how OpenAPI can make your life easier in a serverless world:

• Creating the contract with your consumers is the first thing you do
• You can automatically create your API from this OpenAPI definitions (e.g. skip the whole configuration of your API Gateway on AWS by using OpenAPI)
• You’ll have a beautiful visual overview of your API
• Generate your class definitions based on this OpenAPI definitions
• Validate incoming and outgoing requests with the OpenAPI definition

Did you notice that I just gave you five advantages of using OpenAPI? It’s only the beginning. And that’s why you should practice API First development with OpenAPI.