Give your website a memorable name — Route 53

Your goal

Create a DNS address record and choose how long answers may be cached.

Why this matters

People use names while network connections use addresses. A DNS record connects the two and gives the answer a cache lifetime. You will save a reserved practice address and read its TTL.

Words you will use

DNS is the internet’s name lookup system. A DNS record gives an answer for a name. TTL is how long a cached answer may be kept.

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 practice DNS zone

Create a hosted-zone record under example.invalid. This reserved example name is not registered or published on the internet. The zone holds the records you will edit.

2. Save an address and its lifetime

Add www with the documentation-only address 192.0.2.10. Choose its TTL, or time to live. Resolvers may reuse an answer for this many seconds before asking again.

DNS lifetime in seconds: Use 30–3600 seconds. Shorter values allow earlier refreshes, not instant updates everywhere. Suggested practice value: 60.

3. Look up the saved record

List the zone’s records and find www. Check the address and TTL you saved. This reads the emulator’s DNS configuration rather than asking the public DNS system.

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.