Good progress is taking place within integrations between Adobe Sign and Office 365 products. Some of the goodies:

• Rich previews of PDF documents right within OneDrive and your SharePoint sites.
• Select several files and pull into one PDF with just a couple of clicks within SharePoint document libraries.
• Available in the ribbon for online versions of Word, Excel, and PowerPoint

Read the full article here: “Updates to Adobe Document Cloud bring integrated PDF services to Office 365”

(Image from www.microsoft.com)