A 3D web experience can run in a Browser window or enter an immersive WebXR session. IWSDK is the recommended development path for both screen-based 3D sites and immersive WebXR experiences on Meta Quest.
An IWSDK project can be deployed as a hosted web experience. If you need app distribution, you can optionally package the site as a PWA. Choose
2D mode for a windowed site, including screen-based 3D, and
immersive mode only when the packaged app launches into WebXR. Start with the
PWA overview.