Cloud providers and standard IT tools cover the generic surface. The moment you build something custom, you enter uncharted and unprotected territory.
Custom Application Gap
Your IT service provider is built for off-the-shelf solutions. Custom code sits outside their scope and outside their protection.
Shared Responsibility Gap
Cloud providers secure the platform and stop there. The moment you build something custom, protecting it becomes your responsibility.
Insurer Requirements
Insurers require a hygiene standard. For custom work, no such standard exists, leaving you unable to qualify or demonstrate compliance.
Audit Readiness
Auditors will ask whether every firewall rule you opened has ever been abused. Without the right tooling, you cannot answer that question.