There are many things:
(1) Superior typography
(2) Full support of high-resolution graphics from many file formats (including the ability to place AI and PDF files)
(3) Powerful master page features beyond what Powerpoint can do
(4) The ability to export to many publishing workflows including commercial printing, interactive PDF, EPUB, Digital Publishing Suite
I'm sure others can add many more.
Depends on the project. For presentations, Powerpoint is the right tool.
Since its a handbook and my superiors dont know the adobe and no one in my firm, they insist me to work on powerpoint which is easily editable. And moreover i have learnt my adobe software thru renowned institution and i am very much profecient in that. Do i have to switch over to powerpoint??
It sounds like your boss has no experience with creating print work, and no one cares what the images, type, color, and design will look like.
PowerPoint is not for print production. It is for showing onscreen.
The answer is that almost everything InDesign does is unavailable in PowerPoint. The two applications exist for different reasons, and anyone who would equate them to the extent that this question is formulated as a result is proving they have no standing as the decision maker with respect to choosing the correct tool for the job.