Access architecture is the set of decisions that determine how a request from outside your network becomes a permitted session inside it. Get those decisions right and security improves without making daily work painful. Get them wrong and you accumulate exceptions until nobody can explain who can reach what. We design the first and eliminate the second.
What we determine
- The brokering tier that mediates sessions, and why it sits where it does in your topology.
- The identity source of truth and how trust flows from it to each enforcement point.
- Where policy is evaluated: at sign-in, at connection, at resource, or at several layers.
- How internal systems are published without exposing the broader network.
- Failure and degraded-mode behaviour, including what happens when a dependency is unavailable.
- How administrative access differs from ordinary user access, and how both are logged.
We resist the urge to draw a diagram that only works on a whiteboard. Each decision is tested against your real constraints: your existing directory, your change windows, your on-premises systems that cannot move, your partner organizations, and the compliance evidence your auditors expect. The architecture is written so a new administrator can read it and understand the reasoning, which is what keeps it intact over years.
Mediate, do not expose
The foundational principle in our designs is that no internal system should be directly reachable from an untrusted network. Reach is mediated by a controlled tier that authenticates the request, evaluates policy, and only then establishes the session. This turns a large, flat attack surface into a small, monitored set of decision points. It also means that when we change policy, we change it in one place rather than across dozens of hosts.
What you receive
The design deliverable includes a target architecture document with diagrams, a decision log recording each significant choice, a control matrix mapping requirements to enforcement points, a phased plan for reaching the target state, and an exceptions register for anything that must wait. Nothing is marked complete until it is configured, tested, and documented in your environment.
Architecture also has to anticipate change. Teams reorganize, acquisitions happen, vendors rotate, and projects spin up temporary access. We build in the levers that make those changes routine: naming conventions, policy templates, review schedules, and clear ownership. When an organization can answer the question “who can reach this system, and why?” in minutes rather than days, the architecture is doing its job.
We have designed access tiers for environments that range from a single office with a handful of support staff to distributed organizations with multiple sites and strict audit obligations. The scale changes the detail, not the principle. If you would like a review of your current architecture with a written target design, that is where we usually begin.