One good way to do a little brand reinforcement with every slide is to import image files such as corporate logos as slide backgrounds:

• Choose Format, Background..
• On the drop-down menu in the dialog box, select Fill Effects. Click the Picture tab and the Select Picture button.
• Find your photo file and click Insert and OK.
• Decide whether you want to apply the new background to the active slide or the entire show by clicking the Apply To All or Apply button..
• Keep in mind that PowerPoint treats your photo as a color variation on the background. To eliminate the grid or other design that’s part of the background pattern, click the Omit Background Graphics From Master box in the Background dialog box..
• Creating readable slides demands a simple background. If you have to use something such as a photo of the company’s building, use a photo-editing app to fade the image before inserting it.