# Develop a Custom Feature Store
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Before diving into the specifics of this component type, it is beneficial to familiarize yourself with our [general guide to writing custom component flavors in ZenML](https://docs.zenml.io/how-to/infrastructure-deployment/stack-deployment/implement-a-custom-stack-component). This guide provides an essential understanding of ZenML's component flavor concepts.
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Feature stores allow data teams to serve data via an offline store, and an online low-latency store where data is kept in sync between the two. It also offers a centralized registry where features (and feature schemas) are stored for use within a team or wider organization.
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**Base abstraction in progress!**
We are actively working on the base abstraction for the feature stores, which will be available soon. As a result, their extension is not possible at the moment. If you would like to use a feature store in your stack, please check the list of already available feature stores down below.
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