A family of Microsoft presentation graphics products that offer tools for creating presentations and adding graphic effects like multimedia objects and special effects with text.
The iSpring add-in is specific about working with Office 365. It has a 14-day free trial (see link in previous post).
In general, Microsoft seems quite shy about including web pages because of the potential for malware. It took them years to recover after the introduction of Word macro viruses back in the 90s, so they are more risk-averse than many users.