Boto3 is the official Python SDK for interacting with Amazon Web Services (AWS), providing a user-friendly interface to manage AWS services programmatically. It allows developers to automate tasks such as managing S3 buckets, launching EC2 instances, or interacting with DynamoDB, among many other AWS services. Boto3 supports both resource-based and client-based interfaces, offering flexibility for handling cloud resources and operations. Its seamless integration with AWS makes it a powerful tool for building, deploying, and managing cloud-based applications and workflows using Python.