> For the complete documentation index, see [llms.txt](https://docs.sizebay.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.sizebay.com/size-and-fit-implementation/objetivo.md).

# Introduction

The version 4.0 of the Virtual Fitting Room comes with a series of improvements. The most important of them, of course, is its easy implementation and its customization capacity - providing Sizebay's customer with an experience with the plugin much closer to the visual identity of their e-commerce.

The purpose of this documentation is to explain, in a simple way, the steps to implement the VFR 4.0 in your e-commerce.

We have 5 methods to implement our services, they are:

{% content-ref url="/pages/-LzIpV6g1qaFbNomjV7n" %}
[Service Implementation (Script)](/size-and-fit-implementation/service-implementation-script.md)
{% endcontent-ref %}

{% content-ref url="/pages/-MLP7fgjh6fDIC0KUtyR" %}
[Implementation via Tag Manager](/size-and-fit-implementation/implementation-via-tag-manager.md)
{% endcontent-ref %}

{% content-ref url="/pages/-LzJEI5ZUGA\_NP9Gwnd2" %}
[Service Implementation (API)](/size-and-fit-implementation/service-implementation-api.md)
{% endcontent-ref %}

{% content-ref url="/pages/-MLP7jLP\_8MEiu-Shpzr" %}
[Service Implementation (VTEX IO)](/size-and-fit-implementation/service-implementation-vtex-io.md)
{% endcontent-ref %}

{% content-ref url="/pages/eWAcFLmnhFIKmgilLmTB" %}
[Service Implementation (Shopify)](/size-and-fit-implementation/service-implementation-shopify.md)
{% endcontent-ref %}