I need to build a page in sharepoint online that has two native sharepoint webparts: calendar and documents.
Also, i need to make some kind of custom development, because i was to give the user to make certain actions to the events in the calendar list (such as marking thinks done in a to-do list).
I was thinking i could develop a custom webpart and put it in a page, next to the other webparts, but i see that webparts are being deprecated in sharepoint, and being replaced with add-ins? Is this right?
So, if i have to create an add-in, can i create it and blend it in a page with native sharepoint webparts or not?