Step 1
This Amazon Web Services Solution deploys an Amazon EventBridge rule with a configurable scheduling interval. This scheduling interval defines how frequently the solution runs and takes action to schedule your instances.

Step 2
Each scheduling interval invokes an Amazon Lambda orchestration function. This will determine the list of Amazon Web Services accounts, regions, and services that need to be scheduled. The orchestrator will then invoke multiple scheduling request Lambda functions in parallel to perform scheduling activities.

Step 3
A collection of schedules and periods are stored in an Amazon DynamoDB configuration table to control the scheduling behavior of this solution. You can configure any number of schedules or periods in this table, and the solution will schedule instances accordingly.

Step 4
Each scheduling request inspects resources in its particular target (account, region, service) to find resources that have been tagged for scheduling by using schedules defined in the solution’s configuration table. The scheduling request handler then inspects the configured schedules and performs the required scheduling actions.

Step 5
If auto scaling group (ASG) scheduling is enabled, Instance Scheduler on Amazon Web Services deploys an hourly EventBridge rule and associated resources to manage scheduled scaling actions for tagged Amazon EC2 Auto Scaling groups.

Step 6
In addition to the hourly scan, this solution also tracks updates to schedules in the configuration table. When a schedule is updated, a secondary orchestration Lambda function is invoked so that ASG scheduled scaling actions are kept up to date with the most recent schedule configuration.

Step 7
This solution provides multiple ways to create or update schedules in the solution’s configuration table, along with several example schedules to use as a starting point. Configuration methods include: the DynamoDB console, a scheduler command line interface (CLI), and an Amazon CloudFormation Custom resource.

Step 8
If Amazon Orgs Mode is enabled and a valid Organization ID is provided when the solution is deployed, Instance Scheduler on Amazon Web Services automatically registers newly deployed spoke stacks with the solution hub stack. The hub and spoke stacks must be deployed in the same Region and in accounts that are members of the same Amazon Web Services Organization.