
Getting AI automation right: use as little AI as possible
What is AI automation? Benefits, examples, tasks worth automating, and key steps to do it right while using as little AI as possible in production.
Do you want to automate repetitive tasks with artificial intelligence? The real question is not only what AI can do, but what it actually should do.
Because yes, AI now makes it possible to build automations faster. But in production, the best strategy is often still the simplest one:
Use AI only when there is no reliable solution without it.
This article answers a very practical question: how can you build AI automation without making your system more fragile, more expensive, and harder to maintain?
If you remember only one thing...
If a task can be fixed, ruled, and tested, it should usually be automated in a traditional way.
If a task requires understanding context, rephrasing, personalizing, or structuring fuzzy information, then AI becomes relevant.
In other words:
- traditional code handles the predictable;
- AI handles the unpredictable;
- humans keep control where mistakes are costly.
The real trap: trying to put AI everywhere
Since the arrival of ChatGPT and other AI assistants, one reflex has appeared in many companies:
“With AI, we should obviously be able to automate this.”
The reflex is understandable. The demos are impressive, use cases keep multiplying, and the benefits of artificial intelligence for business automation are easy to see.
But there is a common bias: people start with the AI solution before defining the business problem.
So the right question is not:
“How do we add AI to this process?”
The right question is:
“Which part of this process truly requires AI?”
And very often, the answer is: only a small part of it.
Yes, AI changes the game... especially for building faster
Saying that you should use as little AI as possible in production does not mean minimizing its impact.
Quite the opposite: AI has already transformed the way automation systems are built.
Where teams previously had to:
- code everything by hand;
- assemble sometimes fragile no-code scenarios in Make, n8n, or Zapier;
- or give up because the project seemed too expensive;
it is now possible to build systems faster that are:
- robust;
- maintainable;
- cheaper to run;
- and therefore profitable for use cases that were not viable before.
In short, AI is excellent as a design accelerator.
It becomes much less interesting when you delegate every execution to it for operations that could be handled deterministically.
Two types of automation to distinguish
To make good decisions, you need to separate two different logics.
1. Deterministic automation (handled with scripts / workflows)
The same input always gives the same output.
This is the world of rules, templates, calculations, mappings, scripts, and well-defined workflows.
In practice, this is what you should favor whenever possible, for three reasons:
- Reliability: behavior is predictable.
- Efficiency: execution costs stay low.
- Speed: you avoid unnecessary checks.
2. Probabilistic automation (handled with AI)
Even with the same instruction, the result may vary slightly. That does not mean it is bad. It means this approach should be used where variability is useful, not where it becomes a risk.
In general, AI is relevant when you need to:
- understand rich context;
- analyze varied documents (PDFs, scans, attachments, etc.) to retrieve information that appears in different forms;
- summarize unstructured content;
- write personalized text;
- classify or rephrase ambiguous information;
- transform raw data into an exploitable structure.
The practical rule
When a task is repetitive, stable, and clearly defined, try it first without AI.
When a task depends on context, language, nuance, or poorly structured data, AI can bring real value.
AI is not here to replace rules. It is here to handle what rules alone do not capture well.
Practical example: automating purchase orders
Let us take a very simple example: generating purchase orders.
You start with a Word template for the final document and data that must be injected into it. In some cases, that data is already in an Excel file. In others, it is scattered across emails, meeting notes, or several files.
Case 1: when the input is messy
Before generating the document, you sometimes need to create the input itself.
The information may be spread across:
- an email exchange with the client;
- a scoping meeting;
- quickly written notes;
- a PDF sent by the client.
At this stage, AI is very useful.
It can read these sources, extract the right information, and produce a draft Excel file or an equivalent structured output. That output is then validated by a human before the rest of the process is triggered.
In other words, AI is used here to bring order to ambiguity.
Case 2: everything that can be fixed should be fixed
Once the data has been validated, the logic changes.
Fields such as:
{{CUSTOMER_NUMBER}}{{ORDER_DATE}}{{ITEM_COUNT}}{{TOTAL_AMOUNT}}
do not require any artificial intelligence.
A script can fill the document reliably, instantly, and reproducibly. This is exactly where you should avoid calling a model.
And this is not limited to simple fields. Entire text blocks can also be handled deterministically.
For example:
- if the client is in France, keep legal clause A;
- if the client is outside the EU, insert export clause B;
- if the amount exceeds a certain threshold, add the internal validation paragraph;
- if the product is a subscription, keep the renewal terms;
- otherwise, keep a simpler version of the document.
In other words, even the choice of a paragraph, a clause, or a full section can often be driven by very clear business rules, with no AI at all.
Case 3: where AI becomes truly useful
Now imagine that your sales team loses time manually writing a short personalized introduction for each client.
The need is not to fill a field, but to produce a text such as:
“Dear [Client Name], we are delighted to have been supporting you since [Date of First Order]. Your loyalty means a lot to us, and we hope this new batch of [Product Type] will meet your expectations for [Current Project].”
Here, you need to take into account the right tone, the relationship history, the product type, the commercial context, and the client’s current project, while integrating this information naturally into the text.
In this case, AI can prepare a first draft from well-structured context.
The user reviews it, corrects it, adds their own touch, and validates it.
Workflow summary
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Why not just hand everything to your favorite AI?
On paper, the promise is appealing: “I provide the template and the data, and the AI generates the whole document.”
But a generative model tends to modify things it should not touch: layout, numbers, certain labels, or sensitive wording. A few small mistakes are enough to wipe out the time savings.
And above all, a prompt that works today may behave differently tomorrow. That is why good automation rarely relies on one big prompt alone. It relies on a clear architecture, with a precise role assigned to AI.
The first question is not technical: it is ROI
Before talking about tools, workflows, or prompts, you need to measure the actual time your team is losing. Without a serious estimate of the human time involved, it is hard to know whether the automation is worth it.
These are the right questions to ask:
- How many hours does the team spend on this task?
- How often does it come up?
- What is the full cost of the automation?
- What will the maintenance cost be in 6 months, 12 months, and 24 months?
- Is the cost of an error low or high?
Some simple benchmarks:
- If you outsource the project, aiming for at least 2x is a reasonable minimum.
- If you build it internally, it is better to aim for at least 4x, because the gain is often less direct and more diffuse.
- In every case, include maintenance in the calculation. It is often the most underestimated part.
If you miss this point, you may end up funding a nice demo instead of a real, lasting gain.
What to remember
AI automation is not a question of how much AI you use.
It is a question of where you place it.
The more you manage to:
- fix what can be fixed;
- reserve AI for what is truly contextual;
- and keep targeted human control;
the more likely your automation is to remain useful over time.
How this connects to ATG
At Ask This Guy, this is exactly the approach we promote with ATG: using agents and tools to connect AI intelligently to your data and systems, without turning your whole process into a probabilistic black box.
To go further:
- Customize ATG
- Build tailored tools
- Process your data and workflows in a tailored way
- Configure agents
- Connect tools and MCP
Book a demo if you want to identify, in your own processes, what should remain deterministic and what truly deserves AI.


