An ISO/IEC27001:2013 and ISO 27018:2019 certified cloud solution
Build vs. Buy — Resolved
Stop building the plumbing.
Start building the experiences.
Your teams were hired to build what only your bank can build. Perx gives you the engagement infrastructure — so your teams build the experiences that win customers, not the rules engine underneath them.
The Issue
Building in-house isn't a decision.
It's a countdown.
Here’s how the “we can build this” conversation plays out — every time.
M1
The decision looks reasonable
Month 1–3The squad is approved. Engineering estimates 18 months. Leadership signs off. The roadmap looks achievable.
$0 spent. 18 months assumed.
M9
Scope grows. Timeline slips.
Month 4–12Merchant portals, reconciliation, fraud rules, security audits. Each layer adds weeks. Your teams are still waiting.
$1.5M+ in salaries. Zero live.
M24
V1 ships — already outdated
Month 13–24Competitors have run 50+ experiments. Your customers have formed habits elsewhere. Your build is a snapshot of two-year-old requirements.
$3.9M spent. 24-month CAC penalty.
Y2+
Maintenance becomes the product
Year 2 onwards80% of team time goes to patches and Jira tickets. The system meant to drive growth is now a permanent tax on your teams' velocity.
$3M+/year. Compounding. Forever.
“You set out to build loyalty. Not backlogs.”
The Perx Build vs. Buy Principle
How it works
Buy the platform. Build the experiences
your customers actually remember.
Perx handles the infrastructure. Your teams use it to design, launch, and iterate the engagement experiences that drive measurable revenue — without a single IT ticket.
01
Your teams are live in 90 days
Perx connects to your existing core banking, CRM, or app via API. No rip-and-replace. No core system modification. Your compliance and security teams have been here before — we have worked with Tier-1 BFSI for over a decade.
Zero core system modification required
02
Your marketing teams launch without IT
Missions, streaks, referral loops, tiered rewards — your teams build and deploy them in the Perx no-code studio. No sprint, no backlog, no two-week wait. A campaign live in hours, pivoted in minutes if the data says so.
10 – 20x faster experiment velocity
03
Every experience maps to a P&L outcome
Every action maps to a P&L outcome. Transaction lift, reward ROI, and churn risk — visible in real time, boardroom-ready.
$446 incremental spend per rule triggered
The Economics
What a build actually costs
over three years.
A build is not a one-time investment — it is an ongoing commitment that compounds. Based on a 20-person enterprise squad in a Tier-1 BFSI environment.
Internal Build — Year 1
$3.9M
The build cost
Engineering salaries, infrastructure, enterprise security, compliance audits, and merchant portal logic — before a single campaign goes live.
Internal Build — Annual Run
$3M+
Every year after that
Ongoing payroll to maintain the system, API updates, security patches, and the Jira Tax — the cost of every campaign change that needs a developer to execute.
Build with Perx
~$2.5–3.5M
3-year total — vs. $9.9M to build
One-time implementation plus annual license. Zero maintenance burden. Zero IT dependency for your marketing teams. Your engineering teams stay on your roadmap.
* Based on a 20-person enterprise squad in a Tier-1 BFSI environment. Detailed breakdown available on request.
Why internal builds stall
Four patterns we see in every
enterprise build attempt.
These are not edge cases. They are the consistent experience across every Tier-1 BFSI organisation that has tried to build engagement infrastructure in-house.
01 — Velocity
The team that learns fastest wins
A homegrown build turns every marketing experiment into an IT project. By the time your V1 launches, your teams have shipped one feature. Perx clients have tested and killed 20 mechanics and found what actually moves MAU.
10–20x experiment velocity — without opening a single dev ticket
02 — Maintenance
80% of build cost is invisible at signing
The build cost is visible. The maintenance cost — security patches, API updates, regression testing for every marketing change — is the silent tax that compounds every year. Perx absorbs it entirely.
Above-core architecture — zero impact to your core banking rails
03 — Specialisation
Your teams should be unreplaceable
A rules engine is commodity infrastructure — every bank has one, nobody wins with it. Your teams should be building the lending algorithms, proprietary UX, and financial products that nobody else can copy. That is your competitive edge.
Behavioural science delivered as infrastructure — not rebuilt from scratch
04 — Operations
Building the code is the easy part
Merchant portals, real-time reconciliation, voucher inventory, partner onboarding — a loyalty system is not an engineering project. It is a management problem. Perx runs the operational layer so your teams do not have to.
70% reduction in merchant network management cost via self-service
Time to Value
Every month you build is a month
your CAC stays high.
A 24-month internal build is not just an engineering cost — it is 24 months of inflated acquisition spend while competitors who chose Perx are already compounding efficiency gains.
| Milestone | Perx | Internal — Enterprise |
|---|---|---|
| Requirements & scoping | 2 weeks | 12–16 weeks |
| Architecture & core integration | 4 weeks (API-first) | 24–40 weeks |
| First engagement mechanic live | Pre-built — instant | 32–52 weeks |
| Security, QA & UAT | 2 weeks | 12–20 weeks |
| Time to first campaign live | ~90 days | 18–24 months |
Objection Handling
We have heard every version
of this conversation.
The CPO wants to own the roadmap. The CTO wants to protect the core. The CMO is still waiting on IT. Here is how the conversation goes.
CPO / Head of Digital
"We want to own the IP and the long-term roadmap."
You will. You own the customer data, the customer relationship, and every experience your teams build on Perx. What you will not own is a rules engine that costs $3.9M to build and $3M a year to maintain — and gives you no competitive edge.
33x CAC reduction — efficiency internal builds rarely reach
CTO / Head of Engineering
"It is safer to keep this within our own stack."
Perx sits above-core. We connect via API and never touch your core banking ledger. ISO/IEC 27001 certified, GDPR compliant, on-premise deployment available. We have passed Tier-1 BFSI security audits across 15+ markets.
Zero core system modification — your CBS stays clean
CMO / Head of CX
"IT says they can build a rewards module by next quarter."
Next quarter is too late. And once it is built, every change goes back into the backlog. Perx gives your teams a no-code studio to launch, test, and pivot campaigns in minutes. Your teams submit ideas, not tickets.
10–20x experiment velocity — your teams own the lifecycle
Results on the P&L
What building with Perx
looks like in practice.
Outcomes from enterprises that chose to use Perx to build their engagement experiences — instead of building the infrastructure themselves.
33x
CAC reduction — from $303 to $9 per acquired customer through engagement-led referral mechanics.
Digital Bank · SEA
18.5x
Campaign-level ROI driven by behaviour-led engagement converting directly to P&L.
SMBC Jenius · Indonesia
72–88%
Reduction in cost per engagement versus traditional paid acquisition channels.
Capitec Bank · Africa
$3.1M
Incremental profitability generated through engagement-driven banking behaviour uplift.
Leading Digital Bank · SEA
Enterprise-grade. Compliance-native.
Built for the rigour
of regulated markets.
10+ years inside BFSI means we know what a security audit looks like — and we have already passed it.
ISO/IEC 27001 & 27018 certified
Audit-ready from day one. Bank-grade security baked in, not bolted on.
GDPR compliant
Zero and first-party data by design. No third-party dependency.
On-premise deployment available
Full data sovereignty for enterprises that require it.
BFSI-native controls
Maker-checker workflows, RBAC, and budget guardrails built in.
15+ markets
Cross-border compliance. Single API across SEA, APAC, and Africa.
Live in weeks, not months
No IT ticket required. First campaign live in 90 days.
Ready to build?
Your teams have better things to build
than a loyalty engine.
than a loyalty engine.
For a business like yours.
Give them Perx. Get to market in 90 days. Let your teams build what nobody else can.
An ISO/IEC27001:2013 and ISO 27018:2019 certified cloud solution
SAY HELLO
Perx Technologies Pte Ltd
20A Tanjong Pagar Road
Singapore 088443
An ISO/IEC27001:2013 and ISO 27018:2019 compliant cloud solution
An ISO/IEC27001:2013 and ISO 27018:2019 certified cloud solution