Most SaaS advice is written by people who sold a course about building SaaS products. This post is written by someone who has actually built and launched them — three so far, with paying customers and lessons paid for in real time and real money.
This is the process I follow when building SaaS products, either for myself or for clients who hire me to take their idea from zero to launch. It's practical, opinionated, and deliberately un-hyped. No "10x your MRR" promises. Just the actual steps and the real traps to avoid.
Phase 1: Validation Before a Line of Code
The most expensive mistake in SaaS is building something nobody wants. This sounds obvious. It's still the most common way to lose $30,000 and six months of your life.
Validation doesn't mean asking friends if it's a good idea. (They'll say yes.) It means finding evidence that people with money want to pay for the specific thing you're building.
Find existing evidence of demand
Search Reddit, Quora, and industry-specific forums for people complaining about the problem your product solves. "Is there a tool that does X?" posts are gold. If you find 20 of them, you have product-market fit evidence before writing a spec.
Check competitor pricing
If competitors exist, they've done your validation for you. Analyze their pricing pages. Look at their negative reviews on G2 and Capterra — those are your product opportunities. Build the thing that every negative review asks for.
Pre-sell before you build
Put up a landing page with an "Early Access" signup. If you can collect 100 email addresses from strangers who heard about it through organic channels, you have something. If you also get 5 people to pay $50 for early access, you have a business.
Talk to potential customers
Ten 30-minute conversations with your target customer are worth more than six months of building. Ask what tools they use now, what they hate about them, what they'd pay for something better. Listen 80%, talk 20%.
The goal of Phase 1 is to earn the right to spend money building. If you haven't found strong validation signals, you're not ready to build.
Phase 2: Define the MVP Ruthlessly
An MVP is not a prototype. It's not a demo. It's a real product that delivers real value — just for a smaller audience with fewer features than the eventual full product.
Write down every feature you think the product needs. Then ask this question about each one: "Would a customer refuse to pay without this feature?" If the answer is no, cut it from v1.
The things that almost always survive the cut:
- The core value action (the thing your product actually does)
- User registration and authentication
- Billing integration (even if just one plan)
- The simplest possible way to complete the core workflow
The things that almost never need to be in v1:
- Team/organization features
- Advanced reporting and analytics
- API access (unless your product IS an API)
- Mobile apps
- Third-party integrations beyond the critical one or two
- Admin dashboard (you can manage early users directly in the database)
Phase 3: Choose Your Stack for Speed, Not Cleverness
This is where technical founders lose the most time. There's always a newer framework, a more elegant architecture, a more interesting technical problem to solve. The problem is that none of that matters if you don't have paying customers.
I build SaaS products in Laravel. I'm fast in it, it has excellent ecosystem support, and it handles everything a SaaS needs without fighting the framework. If you're fast in Rails, use Rails. If you're fast in Django, use Django. The goal is shipping — use the stack that gets you there fastest.
My default SaaS stack:
This stack lets me go from empty repo to production-ready SaaS in 6–10 weeks for most products. It's boring in the best possible way.
Phase 4: Build in This Order
The order you build things matters. Here's the sequence I follow, and why:
- 1
Authentication first
Everything else depends on knowing who the user is. Laravel Breeze or Jetstream gives you registration, login, password reset, and email verification in an afternoon.
- 2
Billing second
I set up Stripe and subscription plans before building core features. This forces me to make real decisions about pricing and plans before I've built anything, and it means I can take real money from the moment the MVP is ready.
- 3
Core feature third
Now build the thing your product actually does. With auth and billing already in place, you can focus purely on the product logic.
- 4
Dashboard/usage feedback
After the core feature works, add the simplest dashboard that shows users the value they're getting. Usage stats, recent activity, whatever is relevant. This is what drives retention.
- 5
Email notifications
Set up transactional emails: welcome, payment confirmed, usage milestones, billing failures. These are critical for retention and mostly set-and-forget once built.
Phase 5: Launch Strategy — What Actually Works
"Launch" is not a moment. It's a process. Here's what I've seen work for bootstrapped SaaS products:
Your existing network
Email everyone you know who might be your target customer. Post in any communities you're already part of. Not spammy promotional posts — personal messages explaining what you built and asking if they'd try it. This is where your first 10-20 users come from.
Product Hunt
Worth doing, but plan it properly. Build a following before launch day. Schedule for a Tuesday–Thursday. Respond to every comment within minutes for the first 6 hours. Don't expect this to be your primary customer acquisition channel — use it for initial press/credibility.
Niche communities
Find the communities where your target customer hangs out: specific subreddits, Slack groups, Discord servers, Facebook groups, LinkedIn groups. Participate genuinely before your launch. Then share your product in the context of "I built this because I kept seeing this problem discussed here."
Content marketing (long game)
Write about the problem your product solves, not about the product itself. Blog posts, Twitter threads, LinkedIn articles. This is a 6-12 month investment before you see meaningful results, but it compounds and becomes your best channel long-term.
Cold outreach (with value)
Find companies who would benefit from your product. Don't pitch them directly. Offer to give them free access in exchange for feedback. Frame it as a beta program, not a sales call. This converts much better than traditional cold email.
Phase 6: The First 90 Days After Launch
Most SaaS products live or die in the first 90 days. This is when churn is highest, feedback is most valuable, and the gap between what you built and what customers actually need becomes clear.
My approach for the first 90 days:
- Talk to every single customer who signs up. Email them personally. Offer a call. Take notes on what they say.
- Fix bugs within 24 hours. Slow bug fixes kill early SaaS products — users have no patience when a product is new.
- Track where users drop off in the onboarding flow. Improve the step with the highest abandonment rate each week.
- Delay building new features until existing customers tell you they need them. Build what they ask for, not what you think they want.
- Set up weekly review of key metrics: signups, activation rate, trial-to-paid conversion, churn rate, MRR.
The Metrics That Matter
| Metric | What It Tells You | Target (early stage) |
|---|---|---|
| Activation rate | % of signups who complete core action | > 40% |
| Trial-to-paid conversion | % of trials that convert | > 15% |
| Monthly churn | % of paying customers who cancel | < 5% |
| MRR growth | Month-over-month revenue growth | > 10% |
| LTV:CAC ratio | Revenue per customer vs. cost to acquire | > 3:1 |
The Honest Truth About Building SaaS
Building a SaaS product is a long game. The first product you build will probably teach you more than it earns. That's fine — the skills and patterns you develop are what allow you to build the second one faster and better.
The biggest differentiator between SaaS products that succeed and those that don't is almost never technical quality. It's whether the founder talked to customers, adjusted based on feedback, and stayed in the market long enough to find what works.
Technical execution matters — a slow, buggy product won't retain customers no matter how good the idea is. But good technical execution is a baseline expectation, not a competitive advantage. Focus on that first, then focus on talking to customers. In that order.
Need a technical partner for your SaaS idea?
I can take you from validated idea to production SaaS — architecture, billing, auth, onboarding, and everything in between. Tell me about your product and I'll scope out what it takes to build it.