- Home
- Runbook Automation Software
- AWS AppConfig
AWS AppConfig
What it is
AWS AppConfig lets teams alter application behavior in production using feature flags and dynamic configuration, without redeploying code. Features can be released immediately or gradually to selected groups, including fine-grained and high-cardinality segments. AppConfig supports A/B and multivariate experiments on live traffic, including tests of feature flags, configuration values, and user experiences. LLM model settings, parameters, and prompts can also be managed as dynamic configuration and tested in variants. Configuration data can come from the hosted store, AWS Secrets Manager, Systems Manager Parameter Store, or Amazon S3. Deployments can start in the AWS Management Console, CLI, or an SDK, for workloads on EC2, Lambda containers, mobile applications, or edge devices. Monitored alarms can trigger rollback, with Amazon CloudWatch, Datadog, and Dynatrace named. PrivateLink enables private VPC access, and KMS keys can add encryption. Usage-based pricing is listed per request, configuration received, and experiment hour.
For and against
For
- Changes behavior without code redeployment
- Supports gradual, targeted rollouts
- Provides live A/B and multivariate testing
- Offers automatic rollback from monitored alarms
- Supports multiple configuration sources
Against
- Hosted configuration defaults to 2 MB
- Maximum hosted configuration size is 4 MB
- Usage-based costs vary by activity
- Requires AWS deployment methods
The verdict
AWS AppConfig combines feature flags, experiments, dynamic settings, and rollback controls for running applications. Teams should account for configuration-size limits and usage-based billing.
Who it suits
AppConfig suits teams managing production behavior across cloud, mobile, or edge workloads. It is useful for controlled rollouts, live experiments, runtime tuning, and dynamic allow-lists or block-lists.
Plans and prices
Pay as you go
$0.0000002 per configuration request · $0.0008 per configuration received · $0.90 per experiment hour
Read 4 Oct 2026 · aws.amazon.com
On the record
- Access methods
- Deployments can be started through the AWS Management Console, AWS CLI, or an SDK.docs.aws.amazon.com · read 4 Oct 2026
- AI configuration
- Teams can manage LLM model settings, parameters, and prompts as dynamic configuration and test variants on live traffic.aws.amazon.com · read 4 Oct 2026
- Automatic rollback
- AppConfig can roll back configuration changes when monitored alarms breach predefined thresholds; the feature page names Amazon CloudWatch, Datadog, and Dynatrace.aws.amazon.com · read 4 Oct 2026
- Configuration size limit
- The hosted configuration store has a 2 MB default configuration size limit and a 4 MB maximum.docs.aws.amazon.com · read 4 Oct 2026
- Configuration sources
- AppConfig can deploy configuration data stored in its hosted store, AWS Secrets Manager, Systems Manager Parameter Store, or Amazon S3.docs.aws.amazon.com · read 4 Oct 2026
- Encryption
- AppConfig supports customer-managed AWS KMS keys for an additional layer of encryption on hosted and deployed configuration data.docs.aws.amazon.com · read 4 Oct 2026
- Experimentation
- AppConfig supports A/B and multivariate tests on live traffic, including experiments with feature flags, configurations, and user experiences.aws.amazon.com · read 4 Oct 2026
- Extensions
- AWS-authored extensions can send deployment events to EventBridge, SNS, or SQS and create or update Atlassian Jira issues when feature flags change.docs.aws.amazon.com · read 4 Oct 2026
- Gradual rollouts
- Teams can release features instantly or gradually to selected user groups, including fine-grained and high-cardinality segments.aws.amazon.com · read 4 Oct 2026
- Private connectivity
- AWS AppConfig supports AWS PrivateLink interface endpoints for private access from a VPC without an internet gateway, NAT device, VPN, or Direct Connect connection.docs.aws.amazon.com · read 4 Oct 2026
- Purpose
- AWS AppConfig lets teams change application behavior in production with feature flags and dynamic configurations without redeploying code.aws.amazon.com · read 4 Oct 2026
- Supported workloads
- AWS says AppConfig can be used with applications hosted on EC2 instances, AWS Lambda containers, mobile applications, or edge devices.docs.aws.amazon.com · read 4 Oct 2026
- Use cases
- AWS lists feature flags, runtime operations tuning, and dynamic allow-lists or block-lists as AppConfig use cases.aws.amazon.com · read 4 Oct 2026
