Smart objects have been around since Photoshop CS2. Let's get started! What are linked smart objects?
So to follow along, you'll need Photoshop CC and you'll want to make sure that your copy is up to date. In this tutorial, you'll learn not only how to add your logo or copyright information as a watermark to your images, but also how to make sure that any changes to it instantly update across all your images, by adding your watermark as a linked smart object in Photoshop! Linked smart objects are very powerful, but they're only available in Photoshop CC.