The PAB Extension ' s core architectural advantage is that it enforces web access and data control policy at the browser layer itself, rather than depending on a full-tunnel VPN connection to redirect traffic through Prisma Access; this means policy enforcement continues to apply to a managed device ' s browser-based access to sanctioned web applications even when that device is not currently connected to VPN, which is exactly the gap the question describes and the capability option A correctly identifies. Because the enforcement point is the browser session rather than the network path, security and data controls (such as access restrictions, DLP, watermarking, and clipboard controls) remain consistently applied for supported browsers regardless of whether the underlying device happens to be VPN-connected at that moment - extending policy reach beyond what a purely network-based tunnel approach could achieve. Option B is incorrect because the Extension specifically operates at the browser level and does not tunnel all endpoint traffic; that full-device tunneling behavior describes a VPN client model, which is the opposite of what makes the Extension valuable for this exact scenario. Option C describes remote browser isolation, which is a separate, more resource-intensive capability generally reserved for isolating risky or unmanaged browsing sessions, not the defining mechanism of the lightweight browser Extension for managed devices. Option D mischaracterizes the Extension ' s purpose as network performance optimization, when its actual function is policy enforcement and data protection, not throughput or latency improvement.
Reference:Prisma Access Browser - PAB Extension for Managed Devices Without Active VPN.