It’s a way to configure custom forms and data presentations from within CiviCRM that can then be added to external websites by way of a simple <script> tag.

See the CiviCRM Inlay extension

Inlay generates <script> tags, but these might be hard to put in the right place, so this provides a WordPress shortcode.

Inlay provides shortcodes like this: [inlay id="abcdef012345"] to place the inlay on your page.

1. Install this extension

2. Visit Settings » Inlay from the admin pages.

3. Paste in any of your CiviCRM site's inlays' script tags and hit Save.

4. Add Inlay shortcodes where you want them.

Inlay (some time ago!) began using defer with its <script> tags, so that loading the inlay does not hold up page rendering. This extension lagged that, which meant that (a) it did not apply the defer attribute and (b) it was unable to parse a full <script ...></script> tag pasted in as configuration any longer as reported

This version updates the parser and adds the defer attribute. It is strongly recommended that you update the plugin.