AWS security and AWS networking are inseparable in production environments, but the two specialties ask professionals to solve different classes of problems. The current SCS-C03 exam is built around securing cloud solutions: detection, incident response, infrastructure security, identity and access management, data protection, and security governance. The ANS-C01 exam goes deeper into complex AWS and hybrid networking: design, implementation, operations, and network security.
That overlap can make the two credentials look more interchangeable than they are. A security engineer must understand network controls because traffic paths create trust boundaries and exposure. A network specialist must understand security because routing, segmentation, edge services, private connectivity, and hybrid links can either enforce or undermine those boundaries. The difference is the center of gravity: SCS-C03 starts from risk and protection; ANS-C01 starts from connectivity and network behavior.
There is also a time-sensitive distinction in 2026. AWS has announced that Advanced Networking – Specialty will retire after December 31, 2026, while SCS-C03 is the current Security – Specialty exam. Candidates comparing the two should therefore consider both role fit and timing rather than treating them as two equal long-term branches within AWS certifications.
SCS-C03 asks whether the workload is secure across its full lifecycle
Security work rarely stops at a firewall rule. SCS-C03 expects candidates to reason across six domains that connect detection, response, infrastructure controls, identity, data protection, and governance. A strong answer often depends on seeing how several controls work together rather than naming one security service.
For example, an exposed workload might require network restriction, tighter permissions, better logging, encryption, and a response workflow. The security specialist has to identify the risk, select controls at the right layers, make those controls observable, and preserve enough evidence to investigate when something goes wrong. That is why AWS identity and access management is not a side topic. Identity determines who and what can reach resources even when the network is correctly segmented.
The same pattern applies to data. Encryption, key management, classification, access policy, logging, and backup are connected decisions. A network engineer may enable private connectivity to a datastore; a security engineer must still determine whether the identity model, encryption controls, monitoring, and governance satisfy the risk requirements.
ANS-C01 asks whether the network can carry traffic correctly at scale
Advanced networking starts from the path traffic must take. The exam covers network design, implementation, management and operations, plus security, compliance, and governance. Candidates are expected to understand AWS networking deeply enough to connect regions, accounts, VPCs, data centers, remote users, and shared services without creating fragile routing or operational dependencies.
That makes the networking role more concerned with topology, addressing, route propagation, routing policy, hybrid transport, DNS behavior, performance, and failure domains. A useful foundation is a precise mental model of the Amazon VPC: subnets, route tables, gateways, endpoints, security groups, network ACLs, and the control points through which packets move.
At specialty depth, simply knowing that two networks can be connected is not enough. The engineer must decide how routes are exchanged, how overlapping address spaces are handled, how failure is detected, what happens during convergence, how traffic is inspected, and which parts of the design should be centralized. Those questions are networking-first even though many of the answers have direct security consequences.
Network security is the largest area of overlap
The exams meet most visibly around infrastructure security. SCS-C03 includes designing, implementing, and troubleshooting security controls for network edge services, compute workloads, and network security. ANS-C01 includes network security, compliance, and governance as a major part of a broader networking blueprint. The same services can therefore appear in both exams, but the reason for choosing them changes.
Consider segmentation. In a security scenario, segmentation may be used to reduce blast radius, isolate regulated workloads, or enforce least privilege between application tiers. In a networking scenario, the candidate may have to determine the topology, routing domains, transit design, or connectivity mechanism that makes the segmentation work without breaking reachability.
This distinction is important when studying. Do not create two separate memorization lists for the same AWS services. Instead, practice asking two questions about each control: what security objective does it enforce, and what network behavior makes that objective technically possible?
Identity is security-led, while routing is networking-led
SCS-C03 gives identity and access management its own major domain. Candidates need to reason about authentication, authorization, federation, workload identities, permissions, and access patterns. Network restrictions can support least privilege, but they do not replace identity. A private endpoint does not make an over-permissive IAM policy safe, and a tightly scoped IAM policy does not fix a network path that unintentionally exposes an application.
ANS-C01 goes deeper in the opposite direction. Routing, path selection, hybrid connectivity, DNS resolution, traffic engineering, and network observability are central. A security professional should understand those areas well enough to recognize risk, but a networking specialist is expected to reason about them as primary engineering problems.
This is why security and networking teams often need to design together. A secure architecture can fail if routing sends traffic around inspection. A resilient routing design can fail governance if it creates unauthorized paths. The best designs make the identity and network control planes reinforce each other.
Detection and incident response push SCS-C03 beyond perimeter controls
Security work continues after preventive controls are deployed. SCS-C03 explicitly tests detection and incident response, including the ability to collect evidence, recognize suspicious activity, investigate, contain, and recover. That means candidates need to understand services such as Amazon GuardDuty and the role of audit evidence from AWS CloudTrail.
A networking engineer also uses telemetry, but usually to answer different questions: Is the path available? Where is latency introduced? Are routes converging? Is a tunnel flapping? Are flow patterns consistent with the intended topology? Security telemetry asks whether behavior is malicious or policy-violating; network telemetry asks whether the network is behaving correctly and efficiently.
In a mature environment those views converge. An unexpected route change can be both an availability incident and a security event. A surge in denied connections can be a routing mistake, a bad deployment, or malicious activity. The exams differ in emphasis, but real operations reward professionals who can interpret the same evidence from both perspectives.
Hybrid connectivity exposes the difference between the roles
Hybrid architectures are a good test of whether someone is thinking like a network specialist or a security specialist. ANS-C01 candidates need to understand the mechanics of connecting on-premises networks to AWS, selecting appropriate routing and transport patterns, designing for redundancy, and troubleshooting reachability and convergence across boundaries.
SCS-C03 candidates look at the same hybrid link and ask what trust it introduces. Which networks can communicate? How is administrative access controlled? Where does inspection occur? How are identities federated? Which logs prove what happened? How is sensitive data protected in transit? The security question is not merely whether the link is encrypted, but whether the entire access path is governed.
That is also where architectural shortcuts become dangerous. A broad route advertisement may solve a connectivity problem quickly while opening paths that were never intended. A security rule may block a threat while causing asymmetric routing or breaking a dependency. Good engineers understand the operational consequences of controls before they deploy them.
DNS and edge services sit in both blueprints for different reasons
DNS, load balancing, content delivery, and edge security are another shared zone. A networking specialist must understand how names resolve, how traffic is steered, how health and failover affect paths, and how global or regional services influence latency and availability. The Amazon Route 53 decision model is therefore fundamentally about more than memorizing record types.
A security specialist views those same services as part of the attack surface. DNS can be abused, public endpoints can expose applications, and edge controls can be critical for filtering malicious traffic. The security design needs to consider certificates, WAF controls, DDoS resilience, logging, origin protection, and whether a service should be public at all.
The practical lesson is that shared services do not imply shared exam intent. When reviewing a scenario, identify the business problem first. If the scenario is about secure access, detection, or protection, think SCS-C03. If it is about topology, routing, hybrid connectivity, or network behavior at scale, think ANS-C01.
Choose SCS-C03 when security is the job, not just one requirement
SCS-C03 is the better fit for professionals whose daily responsibilities center on cloud security engineering, security architecture implementation, incident response, identity, data protection, auditability, and security governance. Networking knowledge remains important, but it supports a broader security mission.
The exam is especially relevant when your work involves evaluating risk across multiple AWS accounts and workloads, designing preventive and detective controls, responding to findings, or translating policy into technical safeguards. Experience with general AWS architecture is useful, but the decisive question is whether you are responsible for the security outcome rather than only the network that carries the traffic.
Candidates coming from network engineering should expect to expand substantially into IAM, encryption, evidence, incident response, and governance. That expansion is what separates a cloud security role from a network role with security responsibilities.
Choose ANS-C01 when complex connectivity is the core problem
ANS-C01 fits engineers who spend their time designing and operating large, hybrid, multi-account, or multi-region networks. It rewards deep understanding of routing, connectivity patterns, network services, automation, observability, and failure behavior. Security is part of that work, but it is framed through network architecture and operations.
Because AWS has announced the exam’s retirement at the end of 2026, the decision has an additional timing dimension. A candidate already deep into ANS-C01 preparation may have a clear reason to finish before the deadline. Someone beginning from scratch should evaluate whether the remaining testing window fits realistically and whether the credential aligns with an immediate role objective.
The enduring skills are still valuable after the exam retires. Hybrid routing, DNS, segmentation, private connectivity, observability, and network automation do not become obsolete with a certification code. The retirement changes the credential decision; it does not erase the technical discipline.
The strongest cloud engineers understand where security and networking hand off
SCS-C03 and ANS-C01 are best understood as overlapping specialties with different accountability. Security specialists own the protection model across identity, data, detection, response, infrastructure, and governance. Network specialists own reliable, scalable connectivity and the routing, service, and operational mechanics that make that connectivity work.
In practice, neither role succeeds in isolation. Security controls must respect network behavior, and network designs must preserve security intent. If your role is measured by reducing risk and responding to threats, SCS-C03 is the more direct match. If your role is measured by connecting complex environments and making those paths resilient and observable, ANS-C01 is the closer match.
That role-first decision is more useful than asking which exam is harder. The right choice is the one that matches the problems you are expected to solve, the depth you already have, and, for ANS-C01 in particular, the remaining certification timeline.