How do you handle JSON serialization efficiently in MAUI?

Use System.Text.Json with source-generated serialization (JsonSerializerContext) to avoid reflection, which improves performance and trims better for AOT. Configure options (camelCase, ignore nulls) once and reuse them. Source generation is especially valuable given MAUI's trimming and Native AOT direction.

[JsonSerializable(typeof(List<Product>))]
partial class ApiJsonContext : JsonSerializerContext { }

var products = JsonSerializer.Deserialize(json,
    ApiJsonContext.Default.ListProduct);