What Is Cloud Security?

“Cloud security is the collection of technologies, policies, processes, and controls used to protect cloud-based applications, infrastructure, systems, and data from unauthorized access, attacks, data loss, and other security risks.”

Cloud Security: Overview

Moving applications and data to the cloud changes how infrastructure is managed, but security remains a shared responsibility.

Cloud security requires organizations to protect identities, applications, data, networks, configurations, and access to cloud resources.

Key Areas of Cloud Security

1. Identity and Access Management

Use strong authentication and give users and applications only the permissions they need.

This principle is commonly known as least-privilege access.

2. Data Protection

Protect sensitive data using appropriate encryption, access controls, backups, and data-management policies.

3. Network Security

Use appropriate network segmentation, firewalls, security groups, private connectivity, and monitoring based on the architecture.

4. Application Security

Secure applications, APIs, dependencies, and deployment pipelines against common vulnerabilities.

5. Monitoring and Logging

Monitor authentication events, infrastructure activity, application behavior, and security alerts to identify suspicious activity.

6. Backup and Recovery

Maintain appropriate backups and regularly test recovery procedures for critical data and applications.

7. Configuration Management

Incorrect cloud configurations can create security exposure. Regular configuration reviews and automated security checks can help reduce this risk.

Shared Responsibility

Cloud security is generally a shared responsibility between the cloud provider and customer. The provider is responsible for security of certain underlying infrastructure, while customers remain responsible for aspects such as their data, identities, applications, configurations, and access controls depending on the service used.

Final Thoughts

Cloud security is not a single product. It is an ongoing process involving identity management, data protection, network security, application security, monitoring, configuration management, and recovery planning.