Microsoft Powerpoint Online

In terms of overall performance (drive integration, media management, speed, collaboration) I think Microsoft Powerpoint Online is way behind Google Sheets or even Figma. General productiveness fell greatly after our company forced the usage of Microsoft Powerpoint Online, unfortunately I was not one stakeholder consulted for its adoption. I think it was probably chosen because of financial and legacy reasons (it was forced after a merge), but general opinion among my peers is that it was one of the worst decisions recently taken by the company.

It is part of the pack.

Microsoft Power is still the easiest product due to it have matured over the years and integrates well with the rest of the other MS Office products. Also since the product is very popular sharing or working together on a slide deck is simplified.

Powerpoint's ease of use makes it stand out.
You can build custom presentations easily, and even those without extensive skills can do this.
It makes it a good tool for a whole organization, rather than each team having its own tool.
This means you can have templates for the whole organization to use for better branding and consistency.

Microsoft Powerpoint Online may not have all features of the desktop version, but still it has some necessary tools and features which is why we use it. We also use the desktop version, and Google slides [another presentation tool which helps us store files to drive]. PowerPoint online actually stores files to cloud [OneDrive account]. For people who don't want their desktop space to be consumed with a lot files it is a great alternative. Also, the collaboration part where you can send presentation directly to a person's email, or with the help of link is helpful.

I have used Prezi also in my last company along with Microsoft Powerpoint Online. But I feel that Prezi has also good features like designs, frames, themes etc but this tool is really complex to use as compared to Microsoft Powerpoint Online.

So other than Microsoft Powerpoint Online we are using Google slides which is available with the Google Drive, Creating presentations with Microsoft Powerpoint Online is much more easy and less time consuming.

I have used Canva and Google Slides and Powerpoint is any day better than them. Especially now Powerpoint is online too and hence Google slides is no more useful for us.

Microsoft PowerPoint online (and its offline sister) are the industry standard for a reason. They have been around the longest, and most people are familiar with how to use them. The competitive software packages are all built on the same foundation as PowerPoint, but none of them do it quite as well. Additionally, there's simply more adoption of PowerPoint in the world of business, so sharing a presentation without having to save as a PDF and lose embedded items is a huge plus.

The most similar online presentation I've found is google slides. PowerPoint online keeps more characteristics of the document (animations, text typography, etc.) when uploading from a desktop.

It's far more compatible with existing PowerPoint presentations. Period. Nothing else compares.