AI Basics
A practical primer on the AI technologies behind modern customer service, from machine learning and large language models to agents and prompts.

Artificial intelligence is now built into many of the systems businesses use every day, from customer service platforms and search tools to forecasting software and workplace applications. The term AI covers a wide range of technologies, but in practical terms it generally refers to computer systems that can recognise patterns, interpret language, generate content, make predictions or support decisions.
How AI differs from traditional automation
Traditional automation follows predefined rules. A system might send a confirmation email when an order is placed or route a ticket when a particular condition is met. AI can work with less predictable information because it can interpret patterns in language or data. A customer might describe a faulty product in several different ways, for example, and an AI system can still recognise that the enquiry relates to a product issue and direct it to the appropriate process.
Businesses increasingly combine AI with automation, using AI to interpret what is happening before an automated process carries out the appropriate action.
Machine learning
Machine learning is a branch of AI in which systems learn patterns from data. Instead of every possible rule being programmed manually, the system learns relationships from examples and applies them to new information.
Businesses use machine learning for tasks such as:
- forecasting demand
- detecting unusual transactions
- identifying customers likely to leave
- classifying customer conversations
- recommending products
- predicting service volumes
The usefulness of these systems depends heavily on the quality of the data available and whether the patterns found in historical information remain relevant.
Generative AI
Generative AI creates new content in response to an instruction. Depending on the system, this may include:
- written text
- software code
- images
- audio
- video
In customer service, generative AI can draft replies, summarise long conversations, rewrite information in clearer language or create case notes after an interaction.
Large language models, usually called LLMs, are one of the main technologies behind these tools. They are trained on very large amounts of text and learn relationships between words, topics and different forms of language. This allows the same model to perform a wide variety of tasks, including:
- answering customer questions
- summarising policies
- extracting information from conversations
- drafting emails
- translating responses
- organising text into categories
AI agents
AI agents are designed to work towards a goal and carry out parts of a task using available information and connected tools. A customer service AI agent might receive a message about a delayed delivery, identify the relevant order, check its tracking status, consult company policy and provide the customer with the appropriate next step.
More advanced agents may complete several actions within the same workflow, which makes it increasingly important for businesses to decide what the system can do independently and which actions should still require human approval.
Prompts and business information
A prompt is the instruction or information given to an AI system. It might be as simple as asking the model to summarise a conversation, although business systems often use much more detailed instructions covering tone, permitted information, response format and escalation rules.
AI systems may also need access to information that was never part of the model's original training, such as current product information, internal policies or customer records. Connecting AI to reliable company information can make responses more useful, but the quality of those sources still matters. An outdated policy or inaccurate customer record can lead to an incorrect result regardless of how capable the underlying model is.
Where AI is useful
AI tends to be most useful when businesses need to process large amounts of information quickly or employees repeatedly perform similar knowledge-based tasks.
Common applications include:
- analysing customer feedback
- searching internal knowledge
- drafting and summarising content
- categorising enquiries
- identifying patterns in conversations
- recommending possible actions
- supporting established workflows
The value of AI depends on the problem it is being used to solve. A useful implementation usually begins with a clear operational need and considers whether AI can improve the way information is accessed, analysed or acted upon.
Understanding the limits
AI systems can still make mistakes, misinterpret unusual situations and generate information that sounds convincing despite being incorrect. The consequences depend heavily on the task, which means the appropriate level of oversight will vary between a tool that drafts an internal summary and a system making decisions that directly affect customers.
Most employees do not need a technical understanding of how an AI model is built. People responsible for using or managing these systems do need to understand where the information comes from, what the AI is allowed to do and what happens when its output is unreliable.
That level of understanding becomes increasingly important as AI moves further into everyday customer service and business operations.
The Monthly Brief
Join our community to stay on top of industry insights, emerging trends and useful ideas.


