One Drive is not intrusive or malicious. It is a microsoft facility to help you store, access, share, and collaborate on all your work files from anywhere with Microsoft on any device. I find it invaluable and have been signed in with it for about 10 years. It will not impose on your activity as you use the web or communicate but it does like you to affirm your identity every now and again when you log on. It does this automatically as you launch a browser. I am assuming that you have wisely got yourself a "Microsoft account" (free) and if so this is just part of the package.