What functionality does Amazon Polly provide?

Amazon Polly is a text-to-speech (TTS) service that transforms written text into natural-sounding speech. This service harnesses advanced deep learning technologies to produce lifelike speech that can be used in a wide variety of applications. Users can provide input in the form of text, and Polly generates spoken audio output in multiple languages and voices, making it ideal for creating speech-enabled applications.

In contrast, the other options focus on functionalities that are not provided by Amazon Polly. For instance, generating video content relates to video production and editing services, which is outside Polly's scope. Analyzing voice recordings suggests a service that evaluates or interprets audio data, which is not what Polly does. Storing audio files pertains to data storage services, which may involve other Amazon offerings such as Amazon S3, rather than the core function of converting text into speech that Polly specializes in.