Microsoft announced that a new file collection option has been added to Microsoft Forms. That feature is the option to accept file uploads in response to questions. The file upload option is already available to some users and is rolling out to others over the next few weeks.
Microsoft Forms isn't the only tool that you can use to collect files through an online form that you create. Google Forms has had that feature for a couple of years now. Watch this video to see how it works.
JotForm is another good tool for creating online forms that accept file uploads. JotForm also lets you create forms that people can fill and sign online. Watch this video for an overview of some of JotForm's key features.
Applications for Education
Creating questions that students can respond to by uploading files can be a great way to collect examples of students' work in one convenient place. The file upload option can also be useful for collecting paperwork like permission slips from students and their parents.