Honestly I don't know why you would use unless for older browsers or flash (that I don't work with). To include SVG use embed (if I remember correctly won't let you script). Unless you are embedding SVG or something static you are probably best of using.
The element can represent an external resource, which, depending on the type of the resource, will either be treated as an image, as a nested browsing context, or as an external resource to be processed by a plugin. Exceptions to this is SVG and HTML that are handled differently according to the standard. Used to embed content for browser plugins. The embed element provides an integration point for an external (typically non-HTML) application or interactive content. Standardised in HTML 5, before that it was a non standard tag, which admittedly was implemented by all major browsers.
EMBED VS IFRAME CODE
The 's strength is that the embedded code is 'live' and can communicate with the parent document. Primarily used to include resources from other domains or subdomains but can be used to include content from the same domain as well. In the target site, paste the URL you just copied as the embedding URL.The iframe element represents a nested browsing context.You can embed a Looker Studio report Using oEmbed via the Embed URL option: You can easily embed a Looker Studio report on these sites. Many popular social media platforms, such as Reddit and Medium, use oEmbed. OEmbed is a format for allowing an embedded representation of a URL on third party sites. Paste the URL into the Embed from the web dialog.You can embed a Looker Studio report in Google Sites using the Embed URL option: Paste the iframe code where you want the report to appear. Edit the HTML source of the page in which you want to embed the report.You can't embed a report using the standard shareable link. You must use the link generated by this dialog. Select File > Embed report, or in the upper right, click.Google Workspace users: To limit the report to users in your domain, turn link sharing on and select the "Anyone at with the link can view".For a private report, enter one or more users or Google Groups.For a public report, use the link sharing options "Public on the web" or "Anyone with the link can view".Embedded reports always contain the Looker Studio watermark and full-screen option.Viewers can click a link in the bottom of the report to see it in Looker Studio.Page navigation for multi-page reports appears in the bottom of the report.(The data will refresh as usual when the cache expires.)