Services

Every AWS service MiniStack emulates, grouped by category. Each page documents supported operations, notable behaviors, CloudFormation resource types, and honest limitations.

Core

• S3
  REST / XML
  Buckets, objects, multipart, tagging, versioning, range requests.
• DynamoDB
  JSON (1.0)
  Tables, items, query/scan, TTL, transactions, PartiQL.
• SQS
  Query + JSON
  Queues, visibility, batches, tags.
• SNS
  Query + JSON
  Topics, subscriptions, publish, fan-out to SQS/Lambda.
• Lambda
  REST / JSON
  Real code execution, layers, versions, event source mappings.
• IAM
  Query
  Users, roles, policies, access keys — metadata-only.
• STS
  Query + JSON
  GetCallerIdentity, AssumeRole, session tokens.
• Secrets Manager
  JSON
  Create/rotate/get secrets with versions.
• SSM
  JSON
  Parameter Store, hierarchical paths, secure strings.
• CloudFormation
  Query
  Full engine — 85 resource types, 15 intrinsics, change sets.

Observability

• CloudWatch
  Query
  Metrics, alarms (stored — not dispatched).
• CloudWatch Logs
  JSON
  Log groups, streams, events, filter/subscription.

Integration & events

• EventBridge
  JSON
  Event buses, rules, targets, archives, replays.
• EventBridge Scheduler
  REST
  Schedules & groups (stored — not triggered).
• Pipes
  JSON
  Source → target metadata (routing not enforced).
• Step Functions
  JSON
  State machines, executions, sync exec, SFN mock config.

Streams & analytics

• Kinesis
  JSON
  Streams, shards, records, consumers.
• Firehose
  JSON
  Delivery streams (S3 dest works; others stubbed).
• Athena
  JSON
  DuckDB-backed SQL execution on S3 data.
• Glue
  JSON
  Data Catalog, crawlers, jobs (metadata only).
• EMR
  JSON
  Clusters, steps, instance groups (metadata only).
• OpenSearch
  REST
  Domains, versions, change progress; optional real cluster + Dashboards via OPENSEARCH_DATAPLANE=1.

Compute & containers

• EC2
  Query
  Instances, VPCs, SGs, volumes — metadata only.
• IMDS
  HTTP
  EC2 Instance Metadata Service v1 + v2 — SDK credential chains via AWS_EC2_METADATA_SERVICE_ENDPOINT.
• ECS
  JSON
  Real Docker tasks via the host daemon.
• EKS
  JSON
  Real k3s cluster sidecars.
• Batch
  REST
  Compute environments, job queues, job definitions (auto-revisioning), SubmitJob auto-SUCCEEDED.
• AutoScaling
  Query
  ASGs, launch configs, policies (not triggered).
• ALB / ELBv2
  Query
  Data-plane path/host routing works.

Databases & cache

• RDS
  Query
  Real Postgres/MySQL/MariaDB via Docker.
• RDS Data API
  REST
  HTTP-based SQL against RDS clusters.
• ElastiCache
  Query
  Real Redis/Memcached containers.

Networking & DNS

• Route53
  REST
  Hosted zones, records, traffic policies.
• CloudFront
  REST
  Distributions, OAC, Functions, KeyValueStore (mgmt) — metadata only.
• CloudFront KeyValueStore
  REST/JSON
  Data plane: Describe, ListKeys, Get/Put/Delete/UpdateKeys with ETag concurrency.
• ServiceDiscovery
  JSON + REST
  Cloud Map namespaces, services, instances.

APIs & edge

• API Gateway v1 (REST)
  REST
  Resources, methods, stages, deployments.
• API Gateway v2 (HTTP/WS)
  REST
  APIs, routes, integrations, WebSockets.
• AppSync
  REST
  GraphQL APIs, data sources, resolvers (no exec).

Security & crypto

• KMS
  JSON
  Keys, encrypt/decrypt, grants, aliases.
• ACM
  JSON
  Certificates auto-ISSUED (no validation).
• WAFv2
  JSON
  Web ACLs, IP sets, rule groups (not enforced).
• WAF Classic
  JSON
  v1 + Regional stub — empty List*, valid GetChangeToken, WAFNonexistentItemException.

Identity & accounts

• Cognito
  JSON + OAuth
  User pools, identity pools, JWKS, OAuth2 flows.
• Organizations
  REST
  DescribeOrganization, ListRoots, accounts, OUs with the new Path field.
• Account
  REST
  GetAccountInformation (with AccountState), GetContactInformation, ListRegions opt-in matrix.

Communication

• SES
  Query + JSON + REST (v2)
  SendEmail, templates, optional SMTP delivery.

Storage & transfer

• EFS
  REST
  File systems, mount targets — metadata only.
• ECR
  JSON
  Repositories, images, layer uploads.
• Transfer
  JSON
  SFTP servers & users — metadata only.
• S3 Files
  REST
  Legacy LocalStack-compat EFS-over-S3 shim.

Config & dev tools

• AppConfig
  REST
  Applications, environments, profiles, deployments.
• CodeBuild
  JSON
  Projects, builds, batches (no real compilation).

Cross-service & backup

• Resource Groups Tagging
  JSON
  GetResources, GetTagKeys/Values, TagResources across S3, Lambda, SQS, SNS, DDB, KMS, ECR, ECS, EFS, AppSync, scheduler, more.
• Backup
  REST
  Vaults, plans, recovery points, tags — control plane stub.