Real production incident: AWS Client VPN TLS handshake failure resolved by reissuing certs and rebuilding the client profile.
ClamAV-based signature scanning architecture for uploaded files in a multi-tenant SaaS platform.
Zero-downtime FortiGate HA firmware upgrade procedure for AWS production clusters.
Per-user OCI DNS access and onboarding model replacing shared admin credentials, with console + CLI support.
Zero-downtime customer group migration between UC-A and UC-B under a single-active-UC (no dual event processing) constraint.
TLS/SSL certificate renewal, HAProxy reload, validation, and rollback procedures across multiple environments.
In-place Ubuntu 20.04 → 24.04 upgrade validated in UAT before rollout across cloud and physical edge fleet.