Cloudflare for web applications: fit at the edge, and the proof behind it

Setting up DNS, caching, WAF and access

Cloudflare's own documentation describes caching as a proxy-level service: once a domain's traffic is proxied through Cloudflare, cacheable content such as images and static assets is stored across Cloudflare's distributed network and served from the nearest location, cache rules let a team set custom cache behaviour per path or file type, and a purge can clear selected files or the whole cache when a release needs a clean start. A tiered-cache setting and a longer-retention cache option extend how long content stays cached without a trip back to the origin on every miss.

The Web Application Firewall inspects HTTP and HTTPS requests at the edge against managed rulesets covering common attack patterns such as SQL injection and cross-site scripting, alongside custom rules a team writes for its own application; Cloudflare states that it can roll out a protective rule against a newly disclosed vulnerability globally within hours of it becoming known. Zero Trust access authenticates and authorises every request to an internal application by identity and context rather than by network location, replacing a shared VPN credential with a per-user, per-application policy; Cloudflare positions this as a Secure Access Service Edge approach that consolidates access control, a secure web gateway and related controls into one control plane instead of several separate appliances.

Trade-offs to weigh

1. Edge caching against freshness. Serving cached content from the nearest location cuts load on the origin and speeds up repeat requests, and every cache rule needs a purge step or a short enough duration so a release does not sit stale, which is why a cache plan is tested on a real deploy before launch, not assumed.
2. WAF coverage against false positives. Managed rulesets block broad categories of attack with little setup, and a rule tuned too aggressively can block a legitimate request; a short observation period before full enforcement catches that before a customer does.
3. Zero Trust convenience against a migration that touches every internal tool. Moving off a shared VPN to per-application, identity-based access removes a long-standing single point of failure, and it also means every internal tool is registered and policy-mapped on its own rather than once behind a single tunnel.
4. Edge compute against a full platform. Small, stateless logic and object storage at the edge handle a redirect, a header rewrite or a lightweight API well, and a workload that needs a full application runtime, a database or long-running processes still belongs on the hosting platform Cloud Platform and DevOps Engineering builds, not at the edge.

A worked scenario: hardening and caching a recovering storefront

A storefront that has just been through a security incident and been brought back online needs an edge layer so the same attack path does not reopen it.

The first milestone moves DNS behind Cloudflare's proxy and turns on a managed WAF ruleset in observation mode, logged rather than blocking, so the team can confirm the storefront's real traffic pattern before enforcement is switched on. The second milestone sets cache rules for static assets and tests them against a real deploy, adding a purge step to the release checklist the software release readiness checklist already governs, so an old cached asset never ships silently alongside a new release. The third milestone moves the admin panel behind Zero Trust access, replacing whatever credential previously guarded it, and switches the WAF from observation to blocking once the logged traffic confirms no legitimate request would be rejected.

Each milestone closes on a tested behaviour rather than a setting switched on and assumed correct, the same discipline Cloud Platform and DevOps Engineering applies to the hosting platform behind the edge layer, and the same discipline Managed Operations continues once the platform is live.

Where Cloudflare sits in an AI workload

An inference endpoint placed behind Cloudflare still needs the production-readiness work the production AI inference assessment covers; Cloudflare's layer adds caching for repeat requests, a WAF rule set tuned for an API rather than a browser, and Zero Trust access where the endpoint is internal-only, none of which replace sizing the serving infrastructure itself. Netbase engineers and operates cloud environments on AWS, Google Cloud, DigitalOcean and Cloudflare, choosing the provider per workload rather than standardising on one; Cloudflare is named here only as one of those four, with no cloud partner tier, provider badge or cloud certification claimed.

What to check before committing

• Which records and subdomains are proxied through Cloudflare versus left to resolve directly, since only proxied traffic gets caching and WAF coverage.
• Whether WAF rules run in observation or blocking mode today, and who reviews the logged traffic before switching to blocking.
• Who owns the Zero Trust policy for each internal application, reviewed as staff join and leave rather than left as the original configuration.
• How a cache purge is triggered on release, and whether that step is already part of the release readiness checklist the team follows.

What Netbase has built around this layer

Security practices behind a layer like this include secure code review and version control, role-based access control, multi-factor authentication for admin dashboards, contributors under NDA, and NDAs and data processing agreements on request. Netbase JSC holds ISO 27001 certification for information security management, and Netbase JSC holds a SOC 2 Type II attestation; each describes Netbase's own organisation and is never extended to a client's Cloudflare account or configuration.

Two existing Netbase records sit closest to this edge layer, though neither names Cloudflare as the provider used: the multi-tenant cloud ERP SaaS platform and the Magento recovery and hardening record. Netbase engineers and operates cloud environments on AWS, Google Cloud, DigitalOcean and Cloudflare, choosing the provider per workload; no cloud partner tier, provider badge or cloud certification is claimed for any of the four. Most Netbase projects are agreed as fixed-scope contracts after discovery; milestone-based arrangements are also available.

Where Netbase applies this stack