> For the complete documentation index, see [llms.txt](https://documentation.opencrvs.org/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://documentation.opencrvs.org/v1.4/product-specifications/functional-architecture.md).
# Functional Architecture
The OpenCRVS functional architecture shows the logical components of which the system is comprised. Each of these "functions" is explained in greater detail within the relevant section of the documentation.
{% hint style="info" %}
**OpenCRVS Specifications 1.4**\
For a comprehensive understanding of the features of OpenCRVS, please refer to the complete product specification, which can be found in the [OpenCRVS Specifications v1.4](https://docs.google.com/spreadsheets/d/1Jf31WkNMqlfQOYpjpfG73M5utVGrx4zqA5eiODaftNI/edit?usp=sharing) excel document
{% endhint %}
#### Key:
* Blue (built)
* White (coming soon)
---
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