7 AWS Resources That Could Be Quietly Increasing Your Cloud Bill
AWS makes it incredibly easy to provision infrastructure. Sometimes, a little too easy. An EC2 instance gets created for a project. A volume survives after the instance is terminated. A snapshot is kept "just in case." A development environment runs all night even though nobody is using it. Individually, these expenses may not look alarming. Over time, however, they can quietly become part of…
AWS allows for easy infrastructure provisioning, sometimes leading to over-provisioning and hidden costs. To identify potential cost waste, investigate the following areas:
1. Underutilized EC2 instances: EC2 instances may have been correctly sized initially, but workloads change. If an instance is consistently underutilized, consider rightsizing opportunities using AWS Compute Optimizer. Consider development or test instances running 24/7, old proof-of-concept instances, and non-production environments.
2. Unattached EBS volumes: Terminating an EC2 instance doesn't automatically remove associated EBS volumes. Unattached volumes lead to monthly storage costs. Identify unattached volumes and determine their purpose, whether data retention is required, and if they're part of backups or recovery processes.
3. Old EBS snapshots: Snapshots are useful but can accumulate unmaintained snapshots. Review snapshot inventory, retention period requirements, and create a cleanup policy to ensure retention aligns with business needs rather than unlimited accumulation.
4. S3 storage without lifecycle policies: S3 can hold vast amounts of data, making storage-class decisions crucial. Implement lifecycle policies for less frequently accessed data to transition to more appropriate storage classes. Review which buckets contain older data, how frequently it's accessed, and configure lifecycle policies for incomplete multipart uploads.
5. Unattached Elastic IP addresses: Elastic IP addresses can remain after infrastructure changes. Review public IPv4 addresses not associated with resources that need them. Understand why they exist before removing anything, as they may be referenced in DNS, firewall rules, or partner configurations.
6. NAT gateway and data transfer costs: NAT Gateway charges can be significant, especially with multiple gateways and data processing. Review deployed NAT Gateways, workloads sending traffic through them, and data processed. Investigate unnecessary traffic crossing Availability Zones or regions, and consider using VPC Gateway Endpoints instead.
7. CloudWatch logs with unlimited retention: Logs are essential for troubleshooting, but indefinite retention can be unnecessary. Review log groups and determine a suitable retention period for operations, troubleshooting, security, compliance, and business requirements. Configure retention intentionally rather than deleting logs entirely.
Written by urgent.news from Dev.to's reporting — not their text. Machine-written — may contain errors; check the original before relying on it.
