Add tooltip in ui component form magento 2.

You can add a tooltip beside the field to display a notification for a specific field.

Tooltip used for display notification for a specific field.

You can add a tooltip in ui_component form using <tooltip> node.

<field name="myfield" formElement="input">
    <argument name="data" xsi:type="array">
        <item name="config" xsi:type="array">
            <item name="source" xsi:type="string">customer</item>
        </item>
    </argument>
    <settings>
        <dataType>text</dataType>
        <tooltip>
            <link>https://www.rakeshjesadiya.com</link>
            <description translate="true">Add here your tooltip description to display on hover over a question mark icon....</description>
        </tooltip>
    </settings>
</field>

You can add a tooltip with <tooltip> node,

<tooltip>
    <link>https://www.rakeshjesadiya.com</link>
    <description translate="true">Add here your tooltip description to display on hover over a question mark icon....</description>
</tooltip>

<link> Link will redirect to a specific web page based on the click of the tooltip icon.

<description> Show notification on hover of the tooltip icon.