Give app settings a tidy home — Systems Manager and Parameter Store

Your goal

Save an application setting, update it, and read the new version.

Why this matters

App settings are easier to manage when they have stable paths and versions. You will save a parameter, replace its value, and retrieve the new version. Only harmless practice text is used.

Words you will use

A parameter is a named setting. A hierarchy groups names like folders. SecureString encrypts a value with KMS. Configuration tells an app how to behave.

How to proceed

Start a fresh emulator, read each numbered step, and enter the practice settings shown. Run the action, inspect its API receipt, then continue. Finish lab checks the emulator state again before saving your progress.

1. Create a named setting

Save a String parameter under a /cloudarcade path. Paths help group related application settings. This exercise uses ordinary text, not a password or secret.

2. Update the setting

Enter a new message and save it with Overwrite enabled. The service returns a version number. Updating a parameter does not automatically refresh every app that has cached its old value.

Practice message: Type a short message that you can recognize in the API result. Suggested practice value: Hello from my lab.

3. Retrieve the latest version

Get the parameter by its full path. Check your message and the increased version number. This demonstrates a real settings write/read cycle in the emulator.

Practice, then check your understanding

Perform the actions yourself and inspect the returned state. Errors keep your settings so you can retry. Starting another lab clears the previous live environment. Earned XP is kept, and signed-in achievements sync to your account. Replay does not award duplicate XP.

Read the official AWS documentation for service behavior and production details.