When we think of tech success stories, the mind often goes to dazzling AI tools or futuristic hardware. However, some of the best-performing companies are those quietly powering the world behind the scenes, making essential systems run smoother, faster, and more efficiently.
Two ASX-listed examples stand out: SiteMinder Ltd (ASX: SDR) and Smart Parking Ltd (ASX: SPZ). Their technologies might not make headlines, but both play vital roles in daily life. From booking a hotel room to finding a parking space, both have delivered outstanding growth over the past year.
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Powering hotel bookings around the world
Sydney-based SiteMinder is the invisible backbone of online hotel reservations. Its cloud software connects more than 47,000 accommodation providers to hundreds of booking platforms — from Booking.com and Expedia to Google Hotel Ads and TripAdvisor — ensuring room availability, prices, and payments are updated in real time.
That may sound simple, but it replaces an enormous amount of manual work for hoteliers and eliminates costly overbooking errors. Once integrated, SiteMinder's platform becomes mission-critical — a reason customer churn remains near 1% per month.
The company's "land-and-expand" strategy continues to gain traction. In FY25, it grew property subscriptions by 12.6% to over 50,000 and tripled the number of hotels using its transaction-based products, which charge small fees on each booking or payment processed. With nearly two-thirds of customers now using at least one of these add-ons, SiteMinder's average revenue per hotel is rising steadily.
Annual recurring revenue has surpassed $270 million, and management expects to report positive operating earnings and free cash flow for 2026. Despite its scale, the runway remains long: fewer than 5% of the world's one million accommodation providers currently use SiteMinder's platform.
Monetising every parking space
Another company quietly thriving in the background is Smart Parking, a small-cap technology group specialising in parking management. Using a mix of sensors, cameras, and software, Smart Parking helps property owners (for example, shopping centres and airports) monetise their car parks efficiently.
It's a simple proposition with big potential. Site growth jumped 45% in FY25, and the company now operates thousands of sites across multiple countries. Recent financials showed revenue up 42% year on year, operating earnings (EBITDA) up 47%, and free cash flow of $13.3 million, with strong margins of 26.6%.
Smart Parking's model is capital-light and customer-friendly: clients often face little or no upfront cost, while the company shares in parking revenue. Its recent acquisition of US-based Peak Parking opens the door to America's enormous market (estimated at US$16 billion annually) and positions it for the next leg of growth.
Why investors should pay attention
What these two businesses share is their potential for scale. Both tackle large, everyday markets — travel and parking — using technology that makes them more efficient. Both generate recurring or transaction-linked revenue. And both are proving that you don't need to reinvent the wheel to build a great business, you just need to make it spin better.
While neither company is immune to risks (travel downturns for SiteMinder, regulation or competition for Smart Parking), their steady execution and expanding global footprints show how "behind the scenes" technology can quietly deliver powerful results for investors.
