Working with Parameter Serializers

How and why to use a serializer

We want to use a JSON serializer inside our .NET AWS Lambda project because it makes the development experience a lot more convenient. With a serializer, we can use any JSON-serializable data type as an input and output in our function handler. These include primitive data types, such as string and int, and Plain Old CLR Object (POCO) classes and records that are used purely for storing data.

Without a serializer, both the input and output of a function handler method have to be Stream. We’d have to extract data from the stream, do something with it, and place the response on another stream. This is much more difficult to implement and makes the code far less readable.

The following playground shows how to use serializers.