Provide an Embedding Configurator for Office 365 / SharePoint Online, like the one on OneDrive
In Excel Online on OneDrive, you can choose File > Embed, and you get a nice dialog that let's you choose the part of the workbook you want to embed, and a bunch of other options and then it will generate an embed code for you.
But, if the file is stored in Office 365 / OneDrive for Business / SharePoint Online, there is no "Embed" option on the File menu. There should be, please add it!
I have the same problem, don´t know why when i am in excel online in my personal hotmail account this option is available, but when i am working with a Business account it is not availble, does anyone know how to fix this issue?
Andy Hall commented
Embedding from OneDrive using the Ewa: https://msdn.microsoft.com/en-us/library/hh315812(v=office.14).aspx
Embedding from OneDrive for Business, but does not allow using Ewa: https://support.office.com/en-gb/article/Embed-your-Excel-workbook-on-your-web-page-or-blog-from-SharePoint-or-OneDrive-for-Business-7af74ce6-e8a0-48ac-ba3b-a1dd627b7773?ui=en-US&rs=en-GB&ad=GB&fromAR=1