Tarnfield Row

Tarnfield Row helps CIOs make sense of enterprise AI purchases: what each tool does, where products overlap and who will run the work.
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Sources

Numbered references distinguish public sources from information supplied by a company. Follow the cited source and its check date when quoting a claim.

  1. Telecom page: one AI layer above every system the company already runs. agent.nexus/telco, checked November 8, 2026.
  2. A Nexus engineer builds the first procedure with the team and shows it running in its own tools. agent.nexus, checked November 8, 2026.
  3. Layer 3: each agent is built, deployed and accounted for by the team that uses it. agent.nexus/telco, checked November 8, 2026.
  4. Agents can be created by describing them in plain language, then tested before publishing.. learn.microsoft.com/en-us/microsoft-copilot-studio/fundamentals-what-is-copilot-studio, checked November 8, 2026.
  5. Release pipelines and approval gates support Dev-Test-Prod promotion.. microsoft.com/en-us/copilot/products/copilot-studio, checked November 8, 2026.
  6. Agent-user authentication limits knowledge answers to content that user can access.. learn.microsoft.com/en-us/microsoft-copilot-studio/knowledge-copilot-studio, checked November 8, 2026.
  7. Admins set data policies in the Power Platform admin center.. learn.microsoft.com/en-us/microsoft-copilot-studio/security-and-governance, checked November 8, 2026.
  8. Gemini Enterprise is described as an intranet search, AI assistant and agentic platform.. docs.cloud.google.com/gemini/enterprise/docs, checked November 8, 2026.
  9. Gemini Enterprise app and Gemini Enterprise Agent Platform must be bought separately.. cloud.google.com/gemini-enterprise/faq, checked November 8, 2026.
  10. Enterprise editions are administered with IAM, Workforce Identity Federation and source ACLs.. docs.cloud.google.com/gemini/enterprise/docs/editions, checked November 8, 2026.
  11. Nexus names its product "procedures". agent.nexus, checked November 8, 2026.
  12. Agents connect directly to 4,000+ systems and read live data during execution (real-time RAG). agent.nexus/compare/enterprise-ai-platforms/nexus-vs-glean, checked November 8, 2026.
  13. Agents operate across 4,000+ enterprise systems with bidirectional integration. agent.nexus/compare/enterprise-ai-platforms/nexus-vs-glean, checked November 8, 2026.
  14. Comparison page: agents escalate with full context when uncertain. agent.nexus/compare/enterprise-ai-platforms/nexus-vs-glean, checked November 8, 2026.
  15. Same comparison row: full audit trails, decision traceability, role-based access. agent.nexus/compare/enterprise-ai-platforms/nexus-vs-glean, checked November 8, 2026.
  16. Blog: the agent does not ship unless a CIO can sign off on data flow, access model and audit trail. agent.nexus/blog/nexus-raises-4-3m-seed-shipping-cue, checked November 8, 2026.
  17. Information supplied by Nexus; public-page verification unavailable. recorded November 8, 2026.
  18. Copilot Studio is a platform for creating and managing custom agents, workflows, and apps with no code.. microsoft.com/en-us/copilot/products/copilot-studio, checked November 8, 2026.
  19. Agents can be published to Microsoft Copilot.. microsoft.com/en-us/copilot/products/copilot-studio, checked November 8, 2026.
  20. Microsoft Copilot connectors indexed by Microsoft Search are a knowledge option.. learn.microsoft.com/en-us/microsoft-copilot-studio/knowledge-copilot-studio, checked November 8, 2026.
  21. Identity protection uses Microsoft Entra ID, Microsoft Defender and conditional access.. microsoft.com/en-us/copilot/products/copilot-studio, checked November 8, 2026.
  22. Admins have full visibility into maker audit logs in Microsoft Purview.. learn.microsoft.com/en-us/microsoft-copilot-studio/security-and-governance, checked November 8, 2026.
  23. Prebuilt connectors include Confluence, Jira, Microsoft SharePoint and ServiceNow.. docs.cloud.google.com/gemini/enterprise/docs, checked November 8, 2026.
  24. Each agent gets a unique identity.. docs.cloud.google.com/gemini-enterprise-agent-platform/govern, checked November 8, 2026.
  25. Agent tool-use rules are written in plain language.. docs.cloud.google.com/gemini-enterprise-agent-platform/govern, checked November 8, 2026.
  26. Employees can create their own custom agents with a no-code workbench.. cloud.google.com/gemini-enterprise/faq, checked November 8, 2026.
  27. The app is billed per seat per month and needs an active user license.. cloud.google.com/gemini-enterprise/faq, checked November 8, 2026.
  28. Agent Platform uses pay-as-you-go consumption billing.. cloud.google.com/gemini-enterprise/faq, checked November 8, 2026.
  29. Glean's context layer: connectors capture signals, search indexes data, the Enterprise Graph maps relationships. glean.com/platform, checked November 8, 2026.
  30. Open platform: index once, use through APIs, web SDK, and MCP. glean.com/platform, checked November 8, 2026.
  31. Source-system permissions enforced on every read and write. glean.com/platform/security, checked November 8, 2026.
  32. Glean began as enterprise search. glean.com/about, checked November 8, 2026.
  33. Custom actions from an OpenAPI spec. glean.com/platform/connectors, checked November 8, 2026.
  34. Human approval before agent actions execute. glean.com/platform/connectors, checked November 8, 2026.
  35. SSO verifies user and agent identity before AI runs. glean.com/platform/security, checked November 8, 2026.
  36. Permissions update as soon as they change in the source app. glean.com/platform/connectors, checked November 8, 2026.
  37. Agent governance policies. glean.com/platform/security, checked November 8, 2026.
  38. Agent based or per-user policies. glean.com/platform/security, checked November 8, 2026.
  39. WRITER is positioned as an AI platform for marketing and revenue teams.. writer.com/company/about, checked November 8, 2026.
  40. The vendor says it provides an embedded team of transformation leads and deployment engineers.. writer.com, checked November 8, 2026.
  41. Connectors do not currently support Agent Builder, no-code agents or API integrations.. dev.writer.com/home/mcp-gateway, checked November 8, 2026.
  42. Event log observability is not yet available for Agent Builder v2 agents.. dev.writer.com/home/event-logs, checked November 8, 2026.
  43. WRITER Agent builds multi-step workflows (Playbooks) from natural language.. writer.com, checked November 8, 2026.
  44. Enterprise Brain is described as the universal context layer that grounds agents.. writer.com, checked November 8, 2026.
  45. Connectors let agents take action in the tools a team already uses.. writer.com, checked November 8, 2026.
  46. Custom connectors are built from OpenAPI specifications or MCP servers.. dev.writer.com/home/mcp-gateway, checked November 8, 2026.
  47. Role-based permissions and least-privilege access are offered.. writer.com/trust, checked November 8, 2026.
  48. Roles, permissions and capabilities can be controlled from an IdP and WRITER Agent profiles.. writer.com, checked November 8, 2026.
  49. Enterprise pricing is by contacting sales.. writer.com/plans, checked November 8, 2026.
  50. Positioning: "Purpose-built AI trusted by leading investors, bankers, lawyers, consultants, and Fortune 500 companies.". hebbia.com, checked November 8, 2026.
  51. Max runs analysis over documents with traceability: "Reason over any volume of documents or companies with precise analysis and complete traceability back to every finding.". hebbia.com/product, checked November 8, 2026.
  52. Datasite: "Search and chat over deal documents in Datasite virtual data rooms.". hebbia.com/integrations, checked November 8, 2026.
  53. Max is described as: "Max works the way your firm works, researching and analyzing any deal to produce client-ready spreadsheets, slides, and reports.". hebbia.com/product, checked November 8, 2026.
  54. SharePoint: "Search and chat over documents across your organization.". hebbia.com/integrations, checked November 8, 2026.
  55. Integrations page: "Bring market feeds and your firm's internal data into your Hebbia workflow.". hebbia.com/integrations, checked November 8, 2026.
  56. Customer data isolation: "Your data is stored in siloed environments, fully isolated from every other customer". hebbia.com/security, checked November 8, 2026.
  57. No direct data access by Hebbia staff: "Hebbia doesn't have direct access to your data. Production access is restricted through just-in-time access management.". hebbia.com/security, checked November 8, 2026.
  58. Audit visibility: "See exactly who accessed your data, when they accessed it, and what they did". hebbia.com/security, checked November 8, 2026.
  59. Homepage says Dust connects company knowledge, tools and teams so agents can run across real workflows. dust.tt, checked November 8, 2026.
  60. Search runs semantic search across selected data sources (RAG). docs.dust.tt/docs/developer-platform/overview/developer-platform, checked November 8, 2026.
  61. Admins can control sync down to specific Slack channels, Google Drive folders or Notion pages. docs.dust.tt/docs/developer-platform/overview/developer-platform, checked November 8, 2026.
  62. Provisioned groups are synced from the identity provider through SCIM. docs.dust.tt/docs/user-documentation/admins/admin-governance/workspace-governance-roles-groups-and-permissions, checked November 8, 2026.
  63. Every workspace includes the default @dust agent. docs.dust.tt/docs/developer-platform/overview/developer-platform, checked November 8, 2026.
  64. Tools let agents act on third-party systems such as Slack, Salesforce, Gmail and HubSpot via MCP servers. docs.dust.tt/docs/developer-platform/overview/developer-platform, checked November 8, 2026.
  65. Dust's permission model separates what agents can access from who can use them. dust.tt, checked November 8, 2026.
  66. Permissions are additive across the groups a person belongs to. docs.dust.tt/docs/user-documentation/admins/admin-governance/workspace-governance-roles-groups-and-permissions, checked November 8, 2026.
  67. Pricing page positions self-serve plans for teams and enterprise deployment, governance and support. dust.tt/pricing, checked November 8, 2026.
  68. Priority support with an SLA is listed for the Enterprise tier. dust.tt, checked November 8, 2026.
  69. Documents with confidential or highly confidential sensitivity labels cannot be indexed.. learn.microsoft.com/en-us/microsoft-copilot-studio/requirements-quotas, checked November 8, 2026.
  70. API and MCP server (dated 10.01.2026): "Hebbia now works wherever your firm does, with a new API and MCP server.". hebbia.com/blog, checked November 8, 2026.
  71. Audit logs are only available to workspaces on the Enterprise plan. docs.dust.tt/docs/user-documentation/admins/audit-logs/audit-logs, checked November 8, 2026.