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Route53Projects

Portfolio-ready projects to demonstrate your skills

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Written by senior engineers. Reviewed for technical accuracy.· Updated 2025 · SynfraCore Route53 Team
Expert Content

Route53 — Portfolio Projects

Build these projects to demonstrate real skills to employers. Each project is designed to be interview-worthy — something you can walk through in detail.

Project 1: Multi-Record Hosted Zone with Terraform

Level: Beginner | Time: 1-2 days

Stand up a hosted zone and manage every common record type (A, ALIAS, CNAME, MX, TXT) as code — the DNS equivalent of "hello world," but with the gotchas that actually trip people up in production (apex records, TTL tradeoffs).

Steps

1.Register or use an existing test domain (or a subdomain you control) and create a Route 53 hosted zone for it via Terraform
2.Add an apex A/ALIAS record (prove to yourself why a plain CNAME is rejected at the zone apex)
3.Add a www CNAME pointing at the apex, an MX record, and a TXT record (e.g. for domain verification)
4.Deliberately set a low TTL (60s) on one record, change its value, and time how long dig takes to reflect the change from a resolver that already cached it
5.Document, in the README, the exact difference between what a CNAME and an ALIAS record resolve to when queried with dig

Skills Demonstrated

Route 53 record types and apex-record constraints
Terraform for DNS as code
TTL/caching behavior in practice

GitHub Repo Name

route53-hosted-zone-terraform

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Project 2: Blue/Green Deployment with Weighted Routing + Health Checks

Level: Intermediate | Time: 2-3 days

Deploy two versions of a simple app behind two endpoints, then use Route 53 weighted routing plus a health check to shift traffic gradually — and to prove automatic rollback works when the "new" version starts failing its health check.

Steps

1.Stand up two backends (two EC2 instances, or two Lambda functions behind API Gateway/ALB) — call them blue and green
2.Create two weighted A/ALIAS records for the same name, each with a distinct SetIdentifier, starting at 100/0
3.Attach a Route 53 health check to the green record's endpoint
4.Shift weight gradually (100/0 → 90/10 → 50/50 → 0/100) while watching dig results change across repeated queries
5.Deliberately break the green endpoint's /health path and confirm Route 53 stops returning it even while its weight is still nonzero
6.Document the rollback: instantly reset weight to 100/0 on blue

Skills Demonstrated

Weighted routing policy mechanics
Health-check-driven automatic exclusion from rotation
Real blue/green traffic-shifting, not just a diagram of one

GitHub Repo Name

route53-weighted-bluegreen

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Project 3: Multi-Region Active-Passive Failover with Private + Public Zones

Level: Advanced | Time: 4-5 days

Design a DNS layer for an application running in two regions — one primary, one standby — with automatic failover, plus a private hosted zone so internal services resolve each other without touching the public internet.

Steps

1.Deploy a minimal app in two AWS regions (or simulate two endpoints if a full multi-region deploy isn't feasible)
2.Create PRIMARY/SECONDARY failover records with a health check on the primary
3.Kill or block the primary endpoint and confirm Route 53 fails over to secondary within the health check's failure-threshold window — measure and document the actual observed failover time
4.Create a private hosted zone associated with your VPC(s) for internal service-to-service DNS (e.g. db.internal) and confirm it does NOT resolve from outside the VPC
5.If you have a spare domain, attempt DNSSEC signing end-to-end (KSK creation → activation → enable signing → DS record at the registrar) and document every step, including anything that didn't work as expected

Skills Demonstrated

Failover routing + health-check-driven DR
Private vs public hosted zone separation (split-view DNS)
DNSSEC chain-of-trust mechanics

GitHub Repo Name

route53-multiregion-failover

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Tips for Great Projects

Make it real. Solve an actual problem, even a small one. A weighted blue/green traffic shift you actually watched happen via repeated dig queries is more impressive than a tutorial clone.

Document everything. A repo with a great README beats one with better code but no explanation. Include: what it does, why you built it, how to run it, what you learned.

Show your thinking. In interviews, you'll be asked: "Why did you choose X over Y?" Have a reason. Architecture decisions matter.

Iterate publicly. Make commits regularly. Employers look at commit history. 10 commits over a week shows real work; 1 commit with everything shows you copied it.

Portfolio Checklist

[ ] 3+ projects on GitHub with clear READMEs
[ ] At least 1 project with CI/CD (GitHub Actions pipeline)
[ ] At least 1 project that solves a real problem
[ ] Each project has an architecture diagram
[ ] Projects are pinned on your GitHub profile
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