ESRI Map Apps can be emdedded using a simple URL (and oEmbed), but ArcGIS OnlineMaps have more control with the Embed Web Map plugin.
Embed Prezi
URL from the Share dialog. URL from present page URL stolen from embed code Share URL from Prezi NEXT
Embed VoiceThread
Mammoth Origins https://voicethread.com/app/player/?threadId=10078212%20 VoiceThread – Home
Embed App from UMass Amherst ArcGIS Online
The first time I tried to embed this map from ArcGIS Online at UMass Amherst, using the simple method of pasting the shared URL on it’s own line, I got a blank page. Why? Troubleshooting efforts: Q. Is the site
Embed App from ArcGIS.com
Story Map – tour – URL from page. Shows in editor but not on front end, unless it is served as HTTPS! You can change that in ArcGIS Online from your My Content page, on the Settings tab for the
Test Adobe Spark Embed
Embed handled by iFramely:
Embed Genia.ly (iFramely)
This shows the anatomy of a mammoth (embed handled by iFramely):