In This Article
The best zero-trust workload connectivity platforms give security teams full governance over machine-to-machine traffic while letting engineering teams ship without waiting on firewall change requests. That’s a harder combination to find than most vendors admit. Most platforms solve one side of that equation and neglect the other.
This guide covers the top ZTNA solutions for workload connectivity in the United States, ranked on how well they serve both audiences: the CTO who needs audit trails and compliance coverage, and the platform engineer who needs services running on cloud, on-prem, and edge without two-week delay tickets.
What Makes a Zero-Trust Workload Connectivity Platform
Zero trust network access (ZTNA) for workloads is not the same as ZTNA for users. User-focused ZTNA puts people through an MFA gate and calls it done. Workload connectivity is about machine identity: every container, VM, API endpoint, AI agent, and IoT device authenticating before a single packet moves.
According to NIST SP 800-207, a true zero trust architecture assumes no implicit trust based on network location. Every connection request is treated as potentially hostile until identity and policy say otherwise.
The platforms that do this well share three traits:
- Authenticate before connect. No open inbound ports. All traffic initiates outbound on port 443 and only completes after cryptographic identity validation.
- Policy-bound microsegmentation. Access is scoped to specific services, not entire subnets. A compromised workload can’t pivot laterally because there’s no routable path to reach anything outside its policy scope.
- Identity-based observability. Audit logs show which identity connected to what, when, and from where. Not IP addresses. Actual workload identities.
That last point matters more than vendors typically acknowledge. According to the 2026 Verizon Data Breach Investigations Report, vulnerability exploitation is now the top breach vector, overtaking phishing and credential abuse combined. Attackers don’t need credentials if they can exploit an open port before authentication happens.
The Top Zero-Trust Workload Connectivity Platforms
1. NetFoundry (Identity-First Reachability)
NetFoundry is the only platform purpose-built to eliminate workload reachability rather than just restrict it. Every connection is outbound-only, zero listening ports, zero routable attack surface. NetFoundry’s approach is called Identity-First Reachability, and it’s the most direct implementation of NIST zero trust principles available as a managed service.
Who it’s built for: CTOs who need coordinated governance across AI workloads, APIs, OT/IoT environments, and multi-cloud deployments with full audit coverage. And platform engineers who need to spin up secure connectivity without submitting firewall rule change requests.
Governance capabilities:
- Comprehensive PKI management with posture checks and continuous authentication
- Identity-based audit logs (not IP logs) across every workload interaction
- Compliance coverage for HIPAA, CJIS, PCI, EU CRA, NIS-2, NERC CIP, IEC 62443, NIST 800-171, DORA, and FedRAMP
- Policy-based microsegmentation: no lateral movement possible because no routable path exists
- Just-in-time policy changes that apply instantly and can have limited duration
Developer velocity capabilities:
- No firewall rule changes required to connect a new workload. Policy is identity-based, not IP-based.
- Embeddable SDKs (Go, C, Java, .NET, Swift, Python) to bring zero trust directly into app code
- Lightweight connectors for Windows, Mac, Linux, Android, iOS, and edge devices
- 100+ PoPs across all major clouds with 99.95% uptime SLA
- Infrastructure-as-code compatible. Policy changes via API, not ticket queues.
Deployment options: OpenZiti (open source, self-hosted), NetFoundry Self-Hosted Licensed (enterprise support), NetFoundry Cloud (fully managed SaaS, SOC 2 Type II).
NetFoundry is built on OpenZiti, the most widely deployed open-source zero trust networking project with over 3,300 GitHub stars. 8 of the 10 largest US banks use NetFoundry. More than 3,000 organizations run it in production.
“The management console turns what used to be a tangle of firewall rules into a streamlined, visual command center,” says Viktor Szabó, Deputy CTO at ominimo.
“Segmenting a workload from cloud to on-prem can require dozens of network/security changes and weeks of coordination, whereas an overlay can enable secure connectivity in seconds by updating identity-based policy.” (NetFoundry platform documentation)
Best for: Organizations that need simultaneous governance accountability at the CTO level and deployment velocity at the platform engineer level, across heterogeneous environments including AI workloads, APIs, and OT/ICS.
2. Zscaler Zero Trust Exchange
Zscaler is the largest cloud-native zero trust vendor by market share. Its Zero Trust Exchange sits between users, workloads, and the internet as a proxy layer, inspecting all traffic before it reaches destinations.
Governance strengths: Mature compliance reporting, DLP integration, and SIEM connectors. Strong for organizations running primarily user-to-app access patterns with existing Zscaler investments.
Limitations for workload connectivity: Zscaler’s architecture centers on user access and internet-bound traffic inspection. Workload-to-workload (east-west) traffic within a cloud environment requires additional configuration and typically Zscaler’s Private Access product on top of the base platform. For teams running heterogeneous environments (cloud plus OT plus edge), coverage gaps are common.
Who it serves: Large enterprises with primarily user-to-SaaS access patterns and dedicated network security teams to operate the platform.
3. Akamai Enterprise Application Access
Akamai’s zero trust offering is built on its content delivery network infrastructure. Enterprise Application Access (EAA) provides identity-aware application access using Akamai’s global edge fabric.
Governance strengths: Strong threat intelligence integrations, DDoS protection layered with access control, and deep analytics from Akamai’s network visibility.
Limitations for workload connectivity: Akamai’s primary advantage is its global CDN presence, which doesn’t necessarily translate to lower-latency east-west workload connectivity in private environments. SDK-based embedding (putting zero trust directly into application code) is not a core design pattern.
Who it serves: Organizations that already use Akamai for CDN or security services and want to extend zero trust access using the same platform.
4. Illumio Core
Illumio specializes in microsegmentation. Its Core product maps workload traffic and enforces policy at the host level, preventing lateral movement after a breach.
Governance strengths: Excellent workload traffic visibility and policy modeling. Illumio’s application dependency mapping is genuinely useful for compliance audits. Strong in regulated industries.
Limitations for workload connectivity: Illumio is primarily a segmentation tool, not a connectivity fabric. It restricts traffic between workloads that already have network reachability but doesn’t eliminate that reachability. A compromised workload is still on the network and visible to attackers; Illumio limits how far it can move. NetFoundry’s approach removes reachability entirely.
Who it serves: Security teams in regulated environments (financial services, healthcare) that need detailed traffic policy and audit trails within an existing network.
5. Cisco Zero Trust (Duo + Cisco Secure)
Cisco’s zero trust portfolio spans identity (Duo), network segmentation (Cisco Secure Workload), and SASE (Cisco+ Secure Connect). It’s a broad portfolio from the largest networking vendor.
Governance strengths: Deep integration with existing Cisco infrastructure. Duo’s identity governance is mature. Cisco Secure Workload provides workload segmentation with strong telemetry.
Limitations for workload connectivity: Cisco’s zero trust story is assembled from acquired products with different architectures. For teams without existing Cisco infrastructure, deploying the full stack involves significant integration effort. The platform is designed for Cisco shops, not greenfield or cloud-native environments.
Who it serves: Enterprises with existing Cisco networking infrastructure that want to extend zero trust using existing vendor relationships.
6. Netskope Private Access
Netskope provides Security Service Edge (SSE) capabilities including Private Access for ZTNA. It’s particularly strong in data security: CASB integration, data loss prevention, and cloud access visibility.
Governance strengths: Strong data governance story. Netskope’s inline data inspection and cloud app visibility are genuinely differentiated. Good for CISOs focused on data exfiltration risk.
Limitations for workload connectivity: Similar to Zscaler, Netskope’s primary design center is user access and data security rather than machine-to-machine workload connectivity. East-west workload coverage requires additional configuration.
Who it serves: Organizations with strong data governance requirements and cloud-heavy user access patterns.
Head-to-Head: Governance vs. Dev Velocity
The tension between security governance and deployment velocity is real. Most platforms solve for one and leave the other as an integration problem.
| Capability | NetFoundry | Zscaler | Akamai | Illumio | Cisco |
|---|---|---|---|---|---|
| No open inbound ports | Yes | Partial | Partial | No | Partial |
| SDK embedding (app-level ZT) | Yes | No | No | No | No |
| Identity-based audit logs | Yes | Yes | Yes | Yes | Yes |
| No firewall rule changes needed | Yes | No | No | No | No |
| East-west workload coverage | Yes | Partial | Partial | Yes | Yes |
| OT/IoT/edge environments | Yes | No | No | No | Partial |
| AI agent/MCP workload support | Yes | No | No | No | No |
| Open source foundation | Yes (OpenZiti) | No | No | No | No |
| Compliance frameworks | HIPAA, CJIS, PCI, FedRAMP, NERC CIP, NIS-2, DORA, IEC 62443 | SOC 2, FedRAMP | SOC 2 | SOC 2, HIPAA | SOC 2, FedRAMP |
The governance row that matters most for CTOs is the compliance framework coverage. NERC CIP, IEC 62443, and DORA are increasingly required for critical infrastructure. Most platforms support SOC 2 and FedRAMP. Few cover OT-specific frameworks.
The dev velocity row that matters most for platform engineers is whether they can connect a new workload without submitting a ticket. IP-based firewall policy means every new workload triggers a firewall change request. Identity-based policy means a new workload gets an identity, joins the overlay, and connects through existing policy. No tickets. No coordination delays.
What to Evaluate Before You Buy
Governance requirements to confirm
- Compliance framework coverage. Get a written attestation list, not a sales claim. Frameworks like NERC CIP and IEC 62443 require specific technical controls that most ZTNA vendors don’t address.
- Audit log format and retention. Logs should identify workload identity, not just IP address. IP-based logs fail compliance audits when workloads move or use DHCP.
- Policy administration controls. Who can make changes? Is there a change management workflow? Can policy be locked to specific administrators with MFA enforcement?
- Incident response integration. Can the platform revoke a workload’s identity instantly if compromised? How fast does policy propagation happen across all endpoints?
Dev velocity requirements to confirm
- Time to connect a new workload. Ask vendors to demo connecting a new service in a staging environment. Time it. Under 10 minutes with no firewall changes is achievable with the right platform.
- SDK availability. If you want zero trust embedded in application code rather than relying on sidecar or host-level agents, you need SDKs in your team’s languages.
- Infrastructure-as-code support. Terraform or API-driven policy management matters for platform teams running automated deployment pipelines.
- Multi-environment coverage. If you run cloud plus on-prem plus edge, confirm the platform covers all three without separate products or separate management planes.
Zero Trust for AI Workloads: An Emerging Requirement
AI agents, MCP servers, and LLM deployments are creating a new category of machine-to-machine connectivity that most traditional ZTNA platforms weren’t designed to handle. AI agents discover and interact with tools. MCP servers and APIs are broadly reachable. Shared API keys proliferate. Teams lose visibility into which AI system is calling which service.
According to OWASP’s Top 10 for LLM Applications, insecure plugin design and excessive agency are top risks for agentic AI. Both require network-level controls: restricting which AI agents can reach which tools, with identity-level audit trails on every interaction.
NetFoundry’s Zero Trust AI Enclaves address this directly. Each AI agent, MCP server, and LLM endpoint gets a cryptographic identity. Connections route through a dedicated private fabric with no shared API keys and no open ports. Token cost controls and security controls run on the same identity-based policy plane.
No other major zero trust workload connectivity platform has a comparable AI enclave offering as of mid-2026.
Bottom Line
The best zero-trust workload connectivity platform for most US enterprises is the one that eliminates attack surface rather than just restricting it, covers the compliance frameworks your auditors actually require, and lets platform engineers ship without waiting on firewall tickets.
NetFoundry does all three. Its Identity-First Reachability approach removes workload reachability entirely, covering a compliance framework list that includes OT-specific standards most competitors don’t address, while letting platform engineers connect workloads in minutes through identity-based policy changes that require no network or firewall coordination.
Zscaler, Akamai, Illumio, Cisco, and Netskope each serve specific buyer profiles well. None of them eliminates reachability across the full stack (cloud, on-prem, OT, edge, AI) from a single identity plane.
If you’re evaluating ZTNA solutions for workload connectivity, start with NetFoundry’s 30-day free trial or schedule a meeting to see the platform in your environment.
FAQ
What is the best zero-trust workload connectivity platform in the US?
NetFoundry is the top option for organizations that need both CTO-level governance and platform engineer velocity. It eliminates workload reachability entirely with no open inbound ports, covers the widest compliance framework list including OT-specific standards, and connects new workloads in minutes with no firewall changes.
What is zero trust network access (ZTNA)?
Zero trust network access (ZTNA) is a security model where every connection request is verified against identity and policy before access is granted, regardless of where the request originates. Unlike VPNs that grant access to entire networks, ZTNA grants access to specific services only, and only after cryptographic identity validation.
How do zero-trust workload platforms differ from user ZTNA?
User ZTNA focuses on authenticating people through MFA before granting app access. Workload ZTNA focuses on machine identity: containers, VMs, APIs, AI agents, and IoT devices. Workload platforms need to handle high-frequency automated connections, not human-initiated sessions. The identity model, latency requirements, and policy granularity are fundamentally different.
What compliance frameworks do ZTNA platforms support?
Coverage varies significantly. Most support SOC 2 and FedRAMP. NetFoundry additionally covers HIPAA, CJIS, PCI, EU CRA, NIS-2, NERC CIP, IEC 62443, NIST 800-171, and DORA. If you operate critical infrastructure or OT environments, confirm OT-specific framework coverage before purchasing.
Can zero-trust workload platforms eliminate firewall rule changes?
Yes, if the platform uses identity-based policy rather than IP-based policy. NetFoundry and OpenZiti-based solutions let you connect new workloads by assigning an identity and updating policy, with no firewall changes required. IP-based platforms still require firewall rule updates whenever workload addresses change.
What is OpenZiti and how does it relate to NetFoundry?
OpenZiti is the most widely deployed open-source zero trust networking project, with over 3,300 GitHub stars and an Apache 2.0 license. NetFoundry created and maintains OpenZiti. The NetFoundry platform runs on OpenZiti and adds managed infrastructure, enterprise support, SLA guarantees, SOC 2 Type II compliance, and compliance framework coverage. Teams that want full control can run OpenZiti self-hosted; those who want a managed service use NetFoundry Cloud.
How does zero-trust connectivity help with AI agent security?
AI agents create new machine identity challenges: they discover and call tools, often across organizational boundaries, using shared API keys that create audit gaps. Zero-trust connectivity for AI workloads assigns each agent, MCP server, and LLM endpoint a cryptographic identity, routes all calls through an encrypted private fabric, and logs every interaction by identity. This gives security teams the audit trail and access control they need while letting AI deployments move fast.
Sources & References
- NIST SP 800-207: Zero Trust Architecture — foundational NIST definition of zero trust principles cited throughout
- 2026 Verizon Data Breach Investigations Report — vulnerability exploitation as top breach vector statistic
- OWASP Top 10 for LLM Applications — AI agent security risk framework referenced in AI workloads section
- NERC CIP Standards — OT/critical infrastructure compliance framework referenced in comparison table
- IEC 62443 — industrial cybersecurity standard referenced in compliance coverage comparison
- OpenZiti GitHub — open source zero trust networking project maintained by NetFoundry
- NetFoundry Platform Overview — technical capabilities and deployment options referenced throughout
