Zero-trust network access: A market guide Market Guide for Zero Trust Network Access If your organization is looking to augment its VPN or even pilot a SASE strategy to rapidly expand remote access, then youâve probably heard about zero-trust network access (ZTNA). In this Gartner market guide, explore key findings about ZTNA, recommendations for security and risk leaders, different models of zero trust and a list of representative vendors of ZTNA. Vendor: Download this White Paper! This email address doesnât appear to be valid. Please provide a Corporate E-mail Address. This email address is already registered. Please login.