A: In addition to brand images, colors, fonts, and templates, Tier 4 allows you to set a custom logo, which will appear across your workspace (for all your team, clients and guests) and when you share a batch of folios, giving your documents a more polished, fully branded look. This essentially removes Xtensio branding further, replacing it with yours. But the main differentiator between tiers 3 and 4 are the number of seats included.