What format is commonly used for data exchange in AWS services?

JSON (JavaScript Object Notation) is the most commonly used format for data exchange in AWS services due to several key factors. Its light-weight nature makes it easy to read and write by both humans and machines, which is essential for the efficient transfer of data across different AWS services and APIs. JSON's simplicity and flexibility allow it to represent complex data structures, including arrays and nested objects, making it suitable for a wide range of applications.

In the context of AWS, many services, such as AWS Lambda, Amazon API Gateway, and Amazon SNS, utilize JSON for their input and output data formats. This standardization facilitates seamless integration and interoperability among service components, which is particularly important in cloud environments where services often communicate and share data.

While other formats such as XML and CSV are also used within specific use cases or services, JSON's popularity stems from its ease of use and native compatibility with modern web technologies and programming languages, making it the preferred choice for data exchange in AWS. HTML, being primarily a markup language for web pages, is not designed for data exchange and is therefore not applicable in this context.