In technology, masks refer to digital filters or overlays applied to images, videos, or audio signals. The importance of masks in technology includes:

- Image and video editing (e.g., removing backgrounds or adding effects)
- Privacy protection (e.g., anonymizing faces)
- Data analysis and visualization (e.g., highlighting specific data points)
- Audio processing (e.g., noise reduction or sound enhancement)
- Security applications (e.g., detecting and blocking malicious traffic)

Masks enable selective modification, concealment, or enhancement of digital content, making them a powerful tool in various technological fields.