# Check my theme is Shopify 2.0 OS

{% hint style="info" %}
Online Store 2.0 is a set of features and feature improvements that make themes and theme apps easier to build, more flexible, and easier to maintain.

Many Online Store 2.0 features rely on [JSON templates](https://shopify.dev/themes/architecture/templates). You can migrate a theme's templates to add support for these features by converting a Liquid template into a JSON template, and moving any required Liquid code or HTML into sections that you can include in the new JSON template.
{% endhint %}

Thus, the most obvious sign of Online Store 2.0 is the file structure. \
Template files are located in the `templates` directory of the theme:

<div align="left"><figure><img src="https://3056770170-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2Ft7Ytd7d0OQtxGfB15lNj%2Fuploads%2FTUHRbh3siDpelZHsX6O9%2Fjson-files.png?alt=media&#x26;token=57336f67-aebf-45b2-b10b-185c162f73dd" alt=""><figcaption><p>Files structure</p></figcaption></figure></div>

{% hint style="success" %}
That is the basic sign to determine if your theme is a Store Online 2.0 theme.
{% endhint %}