> For the complete documentation index, see [llms.txt](https://digital-asset-impact-measurment.gitbook.io/impact-measurement-system/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://digital-asset-impact-measurment.gitbook.io/impact-measurement-system/ims-tool/how-to-measure.md).

# How to measure

This section explores how to evaluate a digital asset using each rating system and how the final outcome is determined by the Global Impact Score.

## **There are two types of scores across the rating systems.**

The first one is used to classify the Manual and GSRM ratings, while the second one is used to classify the SDGs and IRIS+ ratings.

### Key Data Source Leverage 

<figure><img src="https://lh6.googleusercontent.com/IdxAb0qJ602jcypZWSPb2aPwlK5oQseI15T29XQiiLv80Eu2neSoFcL3bUku2GlPsItPA-C3-iILeOqsjokaEUrm0a_v77WqpG3x2XDetMN9rXKBSS4FJzcpCddtwodKZ4jy8OgVng742_Meji_Rqt4" alt=""><figcaption></figcaption></figure>

**We recomend to have the .xls document open so that it's easier to follow each one of the steps.**&#x20;

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