Along with the slew of new features rolled out in Windows 10 Mobile build 10149, there's an option to print documents natively. A printer icon is now highlighted in utilities like OneNote, Excel and Word, through which you can print your documents either to a connected printer or save as a PDF.
When you select the Print button, you'll be presented with two options: PDF and Where's my printer? The latter category suggests that Microsoft is working on a native service that allows you to access printers connected to the Internet.
Thanks for the tip Joshua!