# Concepts and definitions
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This section describes key concepts and defines terminology specific to this solution:

 **application** 

A logical group of AWS resources that you want to operate as a unit.

 **Common Media Application Format (CMAF)** 

An HTTP-based streaming and packaging standard to improve delivery of media over the internet which is compatible with HLS and DASH and co-developed by Apple and Microsoft.

 **DRM** 

Digital Rights Management is a technology used to control and manage access to copyrighted material.

 **Dynamic Adaptive Streaming over HTTP (DASH)** 

An HTTP-based streaming protocol (also known as MPEG-DASH) to deliver media over the internet and developed under Motion Picture Experts Group (MPEG).

 **HTTP Live Streaming (HLS)** 

An HTTP-based streaming protocol to deliver media over the internet developed by Apple Inc.

 **QVBR** 

Quality-Defined Variable Bitrate is a video encoding technology that uses fewer bits in low-complexity periods of content and more bits during high-complexity periods (up to the maximum bitrate) to deliver consistently high video quality.

 **thumbnails** 

Files created by taking still images of the original video file.

 **workflow** 

Generated state machines that run a number of operations in sequence.

**Note**  
For a general reference of AWS terms, see the [AWS Glossary](https://docs.aws.amazon.com/general/latest/gr/glos-chap.html).