diff --git a/src/year2/architectures-and-platforms-for-ai/metadata.json b/src/year2/architectures-and-platforms-for-ai/metadata.json
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+{
+    "name": "Architectures and Platforms for Artificial Intelligence",
+    "year": 2,
+    "semester": 1,
+    "pdfs": [
+        {
+            "name": "APAI module 1",
+            "path": "module1/apai1.pdf"
+        }
+    ]
+}
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diff --git a/src/year2/architectures-and-platforms-for-ai/module1/ainotes.cls b/src/year2/architectures-and-platforms-for-ai/module1/ainotes.cls
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+../../../ainotes.cls
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diff --git a/src/year2/architectures-and-platforms-for-ai/module1/apai1.tex b/src/year2/architectures-and-platforms-for-ai/module1/apai1.tex
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+\documentclass[11pt]{ainotes}
+
+\title{Architectures and Platforms for\\Artificial Intelligence\\(Module 1)}
+\date{2024 -- 2025}
+\def\lastupdate{{PLACEHOLDER-LAST-UPDATE}}
+\def\giturl{{PLACEHOLDER-GIT-URL}}
+
+\begin{document}
+
+    \makenotesfront
+    \input{./sections/_introduction.tex}
+
+\end{document}
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diff --git a/src/year2/architectures-and-platforms-for-ai/module1/sections/_introduction.tex b/src/year2/architectures-and-platforms-for-ai/module1/sections/_introduction.tex
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+\chapter{Introduction}
+
+\begin{description}
+    \item[Wall-clock time] \marginnote{Wall-clock time}
+        Time taken to run a program from start to finish.
+
+    \item[High performance computing (HPC)] \marginnote{High performance computing (HPC)}
+        Specialized hardware aiming to reduce wall-clock time (e.g., super-computer). A program is split into strongly coupled sub-problems.
+
+    \item[High throughput computing (HTC)] \marginnote{High throughput computing (HTC)} 
+        Commodity hardware that guarantees a high job throughput (e.g., cloud computing). A program is split into loosely coupled sub-problems that are not necessarily related to each other.
+\end{description}
+
+\begin{remark}
+    A system with two units of the same processor with the clock halved is usually more power efficient than a system with a single unit at full speed.
+\end{remark}
+
+\begin{description}
+    \item[Parallel programming steps] 
+        The typical steps to write a parallel program is the following:
+        \begin{enumerate}
+            \item Decompose the main problem into sub-problems.
+            \item Distribute the sub-problems to the execution units.
+            \item Solve each sub-problem.
+            \item Merge the sub-solutions.
+        \end{enumerate}
+
+        \begin{description}
+            \item[Embarrassingly parallel problem] \marginnote{Embarrassingly parallel problem}
+                Problem that can be split in completely independent sub-problems.
+
+            \begin{remark}
+                Typically, parallelizing a sequential algorithm is not straightforward.
+            \end{remark}
+        \end{description}
+\end{description}
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