Service Insight

RPA vs Custom Automation: Which Makes Sense for Your Business?

RPA
Mar 26, 20264 min read readBy Cortex Team
RPA vs Custom Automation: Which Makes Sense for Your Business?

Not every business needs RPA. We break down when robotic process automation is worth it.

The Question Behind the Question

When a Malaysian SME asks us "should we implement RPA?", what they usually mean is "we have a process that eats too many hours, how do we stop it?"

RPA (Robotic Process Automation) is one answer. It's often not the best one. Vendors rarely mention that, because RPA licences are where their margin lives.

Here's how we actually decide.

What RPA Actually Is

RPA software mimics a human using a computer. It clicks buttons, reads screens, copies fields, and types into forms — the same way a staff member would, just faster and without lunch breaks.

The key detail: RPA works on the surface of your systems, not inside them. It doesn't connect to a database or call an API. It drives the user interface.

That surface-level approach is both its superpower and its weakness.

When RPA Is the Right Call

You can't change the underlying system

This is the strongest case for RPA. If your finance team keys data into a vendor-hosted ERP with no API, no export, and no willingness to customise, RPA may be the only automation you can practically build.

We see this constantly with older accounting packages, government submission portals, and bank interfaces.

The process is stable and high volume

RPA bots are brittle. They break when a button moves. If a process runs 500 times a day and the screen hasn't changed in three years, a bot will pay for itself. If the process runs twice a month and the vendor pushes interface updates quarterly, you'll spend more on maintenance than you save.

You need results in weeks, not months

A simple bot can be running in two to three weeks. A custom integration might take two months. Sometimes speed genuinely matters more than elegance — clearing a seasonal backlog, for example.

When Custom Automation Wins

The systems have APIs

If both ends of your process expose an API — and most modern SaaS tools do — a direct integration is faster, more reliable, and cheaper to run than a bot pretending to be a person. No licence fees. Nothing breaks when a button moves.

The logic is complex

RPA handles "click here, copy that". It struggles with "if the customer is in Sabah and the order exceeds RM5,000 and it's past the cut-off, route it to the regional manager, otherwise apply the standard discount tier". Business rules like that belong in code.

You need an audit trail

Regulated processes need to record who did what and why. A custom system logs every decision as structured data. A bot logs that it clicked a button.

The process will keep changing

Growing businesses change their processes constantly. Custom automation adapts. RPA bots get rebuilt.

The Cost Comparison Nobody Shows You

For a mid-sized Malaysian SME automating a single finance workflow:

RPA route

  • Platform licence: RM12,000 - RM40,000 per year, per bot, ongoing
  • Initial build: RM15,000 - RM30,000
  • Maintenance: budget 20-30% of build cost annually, more if vendors change their interface
  • Three-year total: roughly RM70,000 - RM160,000

Custom integration route

  • Licence: none
  • Initial build: RM20,000 - RM45,000
  • Hosting: RM100 - RM600 per month
  • Maintenance: 10-15% of build cost annually
  • Three-year total: roughly RM30,000 - RM65,000

RPA looks cheaper in month one. It's usually more expensive by month eighteen, because the licence never stops.

The Middle Path Most People Miss

You don't have to choose one. The pattern that works best for most of our clients:

  1. Map the whole process first. Write down every step, who does it, and how long it takes.
  2. Delete the steps that shouldn't exist. Roughly a third of manual work in a typical SME process is checking something an earlier step already checked.
  3. Use APIs where they exist. Connect the systems that can be connected.
  4. Use RPA only for the stubborn last mile — the one legacy portal that refuses to integrate.

Most projects end up around 80% integration and 20% RPA. The RPA footprint stays small enough that licence costs remain manageable and breakage is contained.

A Practical Decision Test

Ask these four questions about the process you want to automate:

  • Does every system involved have an API or a scheduled export? If yes, don't start with RPA.
  • Has the user interface changed in the past twelve months? If yes, a bot will break.
  • Does the process involve conditional business rules? If yes, that logic belongs in code.
  • Will you still run this exact process in three years? If no, keep the investment small.

Three or more unfavourable answers means RPA is likely to disappoint you.

What We Recommend

For most Malaysian SMEs under 200 staff, custom automation built on Power Automate, a lightweight internal tool, or direct API integration delivers more value than an enterprise RPA platform. The licence economics simply don't work at that scale.

RPA earns its place when you're automating against a system you genuinely can't touch. That's a real situation, and when it applies, RPA is the right tool. It's just not the default.

Not sure which category your process falls into? Tell us what the process looks like — we'll map it and give you a straight answer on which approach fits, even if the answer is that you don't need us.

Let's discuss your situation

Every business is different. Our team can help you figure out the best approach for your specific challenges.

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