AI-103 study materials
AI-103 study resources

AI-103 key terms

AI-103 · Get comfortable with the vocabulary.

Azure AI Foundry project

A workspace inside Azure AI Foundry that groups model deployments, data connections, evaluations, and agents so a team can build and monitor AI applications together while inheriting security and billing from the parent resource.

Related: Model deployment, Managed identity
Model deployment

Publishing a specific model version to a named endpoint with its own capacity, content settings, and configuration so client applications can send inference requests to it.

Related: Deployment quota, Content filter
Endpoint key authentication

A shared secret string that lets a client call an AI service endpoint without signing in with an identity; it is simple but must be rotated and kept out of source code.

Related: Managed identity, Role-based access control
Managed identity

An automatically managed Microsoft Entra identity assigned to an Azure resource, allowing that resource to authenticate to other services without storing credentials in configuration or code.

Related: Role-based access control, Endpoint key authentication
Role-based access control

Assigning built-in or custom roles to users, groups, or managed identities so each principal receives only the permissions it needs at a scope such as a resource group or resource.

Related: Managed identity, Private endpoint
Content filter

A configurable safeguard that inspects prompts and model completions for hate, violence, sexual, and self-harm material, and can block or annotate responses before the application receives them.

Related: Model deployment
Deployment quota

The capacity, usually measured in tokens or requests per minute, allotted to a model deployment in a region; exceeding it causes throttling errors, so applications need retry logic.

Related: Model deployment
Diagnostic logging

A resource setting that streams request logs and metrics to Log Analytics, storage accounts, or event hubs, enabling auditing, latency analysis, and alerting for an AI resource.

Related: Private endpoint
Private endpoint

A network interface that assigns an Azure AI resource a private IP address inside a virtual network, so traffic from applications never travels over the public internet.

Related: Role-based access control, Diagnostic logging
System message

The instruction block sent ahead of a conversation that sets the model's role, rules, tone, and output format; it outranks user turns in most chat models.

Related: Prompt engineering, Temperature
Temperature

A sampling parameter that controls randomness: low values produce more predictable, repeatable answers, while high values produce more varied and creative text.

Related: System message, Context window
Prompt engineering

The practice of shaping instructions, examples, and supplied context so a language model returns accurate, consistently formatted answers without any retraining of the model.

Related: System message, Grounding
Grounding

Placing trusted reference content, such as retrieved documents or database rows, inside the prompt so the model's answer rests on supplied facts rather than only on its training data.

Related: Retrieval-augmented generation, Groundedness detection
Retrieval-augmented generation

A pattern that searches an index for content related to the user's question, inserts those passages into the prompt, and lets the model compose an answer based on them.

Related: Embedding, Vector index, Grounding
Embedding

A numeric vector produced by a model to represent the meaning of text, such that passages with similar meaning end up close together in vector space.

Related: Vector index, Chunking
Vector index

A searchable collection of embeddings that answers similarity queries quickly, letting an application find the passages most related to a user's question.

Related: Embedding, Retrieval-augmented generation
Chunking

Splitting long documents into smaller, often overlapping passages before embedding, so retrieval returns focused content that fits inside the model's context window.

Related: Vector index, Context window
Context window

The maximum number of tokens a model can consider in a single request, covering the system message, conversation history, retrieved content, and the generated reply together.

Related: Chunking, Temperature
Function calling

A model capability in which the model requests that the application run a named function with structured arguments, then uses the returned result to continue composing its answer.

Related: Agent, Thread
Agent

An AI application that pairs a model with instructions, tools, and stored conversation state so it can plan multiple steps and act toward a goal instead of replying once.

Related: Function calling, Thread
Thread

The stored sequence of messages and tool outputs for one conversation with an agent, which the service replays to the model on each turn to preserve continuity.

Related: Agent, Context window
Groundedness detection

A check that judges whether a generated answer is supported by the source content supplied with it, flagging responses that contain unsupported or fabricated claims.

Related: Grounding, Retrieval-augmented generation
Optical character recognition

Extracting machine-readable text, together with its positions, from photographs of documents, receipts, and signs so the text can be searched, indexed, or processed further.

Related: Document Intelligence prebuilt model
Image classification

Assigning one or more descriptive labels to an entire image, such as a category of product or scene, using a trained custom model or a prebuilt vision model.

Related: Object detection, Custom vision model
Object detection

Locating items within an image by returning a bounding box, a label, and a confidence value for each detected instance rather than a single label for the whole picture.

Related: Image classification, Confidence score
Custom vision model

A vision model trained on your own labeled images to recognize classes or objects specific to your business, then deployed to an endpoint that returns predictions.

Related: Image classification, Object detection
Sentiment analysis

Scoring text as positive, negative, or neutral, optionally sentence by sentence, to gauge opinion in reviews, surveys, support tickets, or social posts.

Related: Key phrase extraction, Summarization
Key phrase extraction

Pulling out the main concepts or topics from a document so its content can be tagged, grouped, summarized, or matched against search queries.

Related: Named entity recognition, Summarization
Named entity recognition

Detecting mentions in text and classifying them into categories such as people, places, organizations, dates, quantities, and events for later structuring or filtering.

Related: PII detection, Key phrase extraction
PII detection

Identifying personal data such as names, phone numbers, addresses, and account identifiers in text, and optionally redacting it so content can be stored or shared safely.

Related: Named entity recognition
Summarization

Condensing a long document or conversation into a shorter abstract or extractive summary that keeps the essential points while sharply reducing length.

Related: Key phrase extraction, Sentiment analysis
Conversational language understanding

A trained model that maps a user's utterance to an intent and extracts relevant entities, typically used to route requests inside a bot or voice application.

Related: Named entity recognition, Question answering
Question answering

A curated knowledge base of question-answer pairs and passages that returns a short answer with a confidence value for a user's natural-language question.

Related: Conversational language understanding
Document Intelligence prebuilt model

A ready-made extraction model for common document types such as invoices, receipts, or identity cards that returns typed fields with confidence values from an uploaded file.

Related: Custom extraction model, Confidence score
Custom extraction model

A Document Intelligence model trained on your own labeled samples, using template matching or neural learning, to pull out fields unique to your organization's forms.

Related: Composed model, Confidence score
Composed model

Several extraction models assembled behind one model identifier, so a single request automatically routes each submitted document to the model that fits it best.

Related: Custom extraction model, Document Intelligence prebuilt model
Confidence score

A value, usually between zero and one, expressing how certain the service is about a detected label, extracted field, or answer; low values usually warrant human review.

Related: Document Intelligence prebuilt model, Object detection
Enrichment skillset

A pipeline of AI steps attached to a search indexer that extracts text, generates embeddings, and derives new fields from each document as it is indexed.

Related: Indexer, Embedding
Indexer

A search component that reads a data source, runs each document through an optional skillset, and writes the resulting fields into an index on a schedule or on demand.

Related: Enrichment skillset, Vector index