So far in this deployment series, you’ve:
- Got your front-end deployed (and looking good)
- Got your back-end running, (and hopefully not on fire)
Now comes the part that makes your application…online or real.
Step 3 is where your application gets a proper home address, becomes accessible to users, and stops living as a collection of IP addresses and ports that only you and your team understand.
Welcome to DNS, domains, and yep, go live.
Why this step has more to it than you think it should.
After step 1 and step 2, you can have a perfectly deployed front-end and a rock-solid back-end, but if your DNS is misconfigured, your app is effectively invisible to the world, including your user base.
DNS is one of those layers that should “just work”… until it absolutely doesn’t and you are absolutely and utterly frustrated.
That’s why getting this step right is critical.
What we’re actually doing in this step.
At a high level, you’re connecting three things:
- Your domain name (e.g. yourapp.com)
- Your infrastructure (servers, load balancers, or platforms)
- Secure access (HTTPS)
Step 2 was about making your app run. Step 3 is about making it reachable.
1: Getting a domain (or using one you already have)
If you don’t already have a domain, you’ll need to register one via a domain registrar.
Common options include providers like Namecheap, GoDaddy, or Google Domains.
Once you have a domain, you’ll manage its DNS records — either at the registrar or via a dedicated DNS provider like Cloudflare.
2: Understanding DNS basics
You don’t need to become a DNS expert, but you do need to understand a few key record types:
- A Record: Points a domain to an IP address
- CNAME Record: Points a domain to another domain
- TXT Record: Used for verification
Example: Basic DNS setup
yourapp.com → A → 192.0.2.1
www.yourapp.com → CNAME → yourapp.com
What’s actually happening (simplified flow)
User types yourapp.com
↓
DNS resolver asks: “Where is this?”
↓
DNS returns IP: 192.0.2.1
↓
Browser connects to your server
↓
Your app responds
That’s it. That’s the core of it. Simple? Sometimes.
3: Pointing your domain to your app
This is where things connect:
- If you’re using a single server → point your A record to the server IP
- If you’re using a load balancer → point your domain to the load balancer
- If you’re using a platform → follow their DNS instructions (usually CNAME-based)
Example architectures:
1. Single server setup
yourapp.com → A → Server IP
↓
Your App
2. Load balancer setup
yourapp.com → A → Load Balancer
↓
Server 1/Server 2
↓/↓
App/App
3. Platform (Cloud 66-style setup)
yourapp.com → CNAME → your-app.c66.io
↓
Cloud 66 Managed Stack
↓
Load Balancer + Servers
↓
Your App
In this model, you’re not handing everything off to a black box PaaS.
You still get control over your infrastructure (servers, regions, scaling), but Cloud 66 handles the heavy lifting of wiring it all together — from provisioning to routing to deployment orchestration.
Then you wait. Because DNS propagation is real. It can take seconds. It can take minutes. Occasionally, it feels like it takes a full moon cycle.
4: Adding HTTPS (it’s not optional anymore)
If your site isn’t served over HTTPS, modern browsers will actively warn users away.
So this step matters a lot.
What HTTPS actually adds
Without HTTPS: User → (plain text request) → Server
With HTTPS: User → 🔒 encrypted request → Server
The good news: tools like Let’s Encrypt have made SSL certificates free and easy to set up.
You’ll need to do the following:
- Generate or request a certificate
- Configure your server or platform to use it
- Set up automatic renewal
5: Handling redirects and edge cases
A few things you’ll want to clean up before calling it “done”:
- Redirect HTTP → HTTPS
- Redirect www → non-www (or the other way around, just pick one)
- Handle trailing slashes and canonical URLs
These things aren’t just sprinkles on top, they impact SEO, caching, and your user experience.
Common pitfalls (aka things that will absolutely happen at least once)
- DNS records look correct but aren’t propagating yet
- SSL certificate installed… but not actually being used
- Mixed content errors (HTTP assets on an HTTPS site)
- Pointing to the wrong environment (hello staging 👋)
None of these are unusual. All of them are fixable.
Where things get more complex (and where a DevOps platform can help)
As your setup grows, DNS and routing can get more complicated:
- Multiple environments (staging, production, preview)
- Multiple services (APIs, workers, front-end)
- Traffic routing and failover
This is where platforms like Cloud 66 really shine. Cloud 66 abstracts this configuration into something repeatable and manageable.
Instead of manually wiring everything together each time, you define it once and reuse it.
What’s next?
At this point, your app is:
- Deployed (front-end + back-end)
- Reachable via a real domain
- Secured with HTTPS
Now comes the part that turns deployments from a one-time event into a repeatable system.
In Step 4, we’ll dive into CI/CD pipelines — how to automate builds, testing, and deployments so you’re not manually pushing changes and hoping for the best, every time.
Because deployment isn’t the finish line. It’s the beginning of doing this reliably, over and over again.
Final thoughts
DNS and domains aren’t the flashiest part of deployment, but they’re the bridge between your app and your users.
Get it right, and everything just works.
Get it wrong, and nothing does.