Zero Trust for Cloud Applications: Practical Steps, Not a Product Purchase
The idea, minus the marketing
Stop treating network location as evidence of trustworthiness. A request from inside the office network gets no more benefit of the doubt than one from a coffee shop; every request is authenticated, authorised and logged based on identity, device state and context. This matters because flat internal networks turn one compromised laptop or one exposed service into access across the estate. Nothing about that principle requires buying a specific platform, though several will happily sell you one.
Identity is the foundation, so fix it first
Single sign-on across everything, phishing-resistant multi-factor authentication for administrative access, no shared accounts, and joiner-mover-leaver automation so access is removed when people change roles. Most organisations have gaps here that matter far more than any network control: dormant accounts with production access, service accounts with static credentials in a wiki, contractors whose access outlived the engagement. Audit that before spending on anything else, because the rest of zero trust builds on identity being correct.
Replace network access with application access
The VPN model grants broad network reach once connected. Application-level access proxies grant access to a specific service, per request, evaluated against identity and device posture. That is a meaningful reduction in blast radius and it also improves the remote and contractor experience, which helps adoption. Migrate progressively: start with internal tools and admin interfaces, which are both the highest-risk and the easiest to move, then work outward.
Workload identity, not stored secrets
Services authenticating to each other with long-lived API keys copied into environment variables is the internal equivalent of a shared password. Cloud providers offer workload identity mechanisms that issue short-lived credentials based on the workload's verified identity, removing the stored secret entirely. This is one of the highest-value and least glamorous changes available, and it eliminates an entire class of incident caused by credentials in repositories, logs and container images.
Segment where it matters, not everywhere
Full micro-segmentation of every service is a large project with real operational cost. Coarse segmentation, done well, captures most of the benefit: separate production from everything else, isolate the data tier, and put explicit controls around administrative paths. Then tighten specific high-value boundaries. Teams that attempt total segmentation first typically stall, then leave the whole initiative half-finished, which is worse than a deliberate partial implementation.
Assume you will be wrong somewhere, and log accordingly
Zero trust does not prevent compromise; it limits reach and makes detection possible. Centralised logging of authentication, authorisation decisions and administrative actions — retained long enough to investigate — is what turns an architecture into an operational capability. Test it by asking a simple question: if a specific user's credentials were stolen today, could you list everything they accessed this week? If the answer takes days, that is the gap to close first.
Have a project that needs this kind of thinking?
Let's talk through what you're building — free consultation, no commitment.
Get in Touch