diff --git a/presentation/mainmatter/introduction.tex b/presentation/mainmatter/introduction.tex
index 1f002a91b9db7c52a3cc92bf349a58dcd157aa8e..2df2b525718999d08e7a2046d4aa6e6e8c34ef22 100644
--- a/presentation/mainmatter/introduction.tex
+++ b/presentation/mainmatter/introduction.tex
@@ -80,8 +80,8 @@
 \end{frame}
 
 
-% Slide functional materials, 1 of 2, no emphasis
-\begin{frame}{Materials classification}
+% Slide functional and quantum materials, 1 of 2, no emphasis
+\begin{frame}{Materials realms}
   \centering
   \vspace*{0em}
   \resizebox{0.95\textwidth}{!}{
@@ -156,9 +156,14 @@
           \textcolor{fzjgreen!80!black}{\small strong correlation}
         \end{tabular}
       };
-      % Add invisible text and arrow in first frame
-      \node[text opacity=0] at ($(struct)+(7,-0.5)$) {We focus on these};
-      \draw[-Stealth, line width=1.5pt, opacity=0] ($(struct)+(7,0)$) -- ($(quantum.south east)+(-0.5,-0.5)$);
+      % Arrow w. text to func materials
+      \draw[-Stealth, line width=1.5pt, draw=fzjred] ($(struct)-(7,0)$) -- ($(func.south west)+(+0.5,-0.5)$);
+      \node[text=fzjred, align=center, text width=3.5cm] at ($(struct)+(-7,-0.75)$) {Focus on atomic structure (ML-IAPs)};
+
+
+      % Arrow w. text to quantum materials, invisible
+      \draw[-Stealth, line width=1.5pt, draw=fzjgreen, opacity=0] ($(struct)+(7,0)$) -- ($(quantum.south east)+(-0.5,-0.5)$);
+      \node[text=fzjgreen, align=center, text width=3.5cm, text opacity=0] at ($(struct)+(7,-0.5)$) {Full electronic structure is crucial};
     \end{tikzpicture}
   }
   \vspace{0.5cm}
@@ -166,8 +171,8 @@
 
 
 
-% Slide functional materials, 2 of 2, emphasis on quantum materials
-\begin{frame}{Materials classification}
+% Slide functional and quantum materials, 2 of 2, emphasis on quantum materials
+\begin{frame}{Materials realms}
   \centering
   \vspace*{0em}
   \resizebox{0.95\textwidth}{!}{
@@ -243,9 +248,15 @@
           \textcolor{fzjgreen!80!black}{\small strong correlation}
         \end{tabular}
       };
-      % Add visible text and arrow in second frame
-      \node[text=fzjgreen] at ($(struct)+(7,-0.5)$) {We focus on these};
+      % Arrow w. text to func materials
+      \draw[-Stealth, line width=1.5pt, draw=fzjred] ($(struct)-(7,0)$) -- ($(func.south west)+(+0.5,-0.5)$);
+      \node[text=fzjred, align=center, text width=3.5cm] at ($(struct)+(-7,-0.75)$) {Focus on atomic structure (ML-IAPs)};
+
+
+      % Arrow w. text to quantum materials
       \draw[-Stealth, line width=1.5pt, draw=fzjgreen] ($(struct)+(7,0)$) -- ($(quantum.south east)+(-0.5,-0.5)$);
+      \node[text=fzjgreen, align=center, text width=3.5cm] at ($(struct)+(7,-0.5)$) {Full electronic structure is crucial};
+
     \end{tikzpicture}
   }
   \vspace{0.5cm}
@@ -344,6 +355,57 @@
 \end{frame}
 
 
+% Slide AiiDA engine % Section introduction
+\begin{frame}[plain,c]
+  \frametitle{High-throughput data generation}
+  \framesubtitle{with perfectly labeled data}
+  \vspace*{0em}
+
+  \begin{columns}[c]
+    \begin{column}{0.3\linewidth}
+      \begin{center}
+        \includegraphics[width=1.0\linewidth]{../resources/fig/presentation-2023-06/aiida-card-aiida.net.png}%
+      \end{center}
+    \end{column}
+    \begin{column}{0.7\linewidth}
+      \begin{center}
+        \includegraphics[width=1.0\linewidth]{../resources/fig/aiida/aiida-node-types4.pdf}%
+        % \caption[AiiDA type hierarchy]{The simplified AiiDA process type (left) and
+        % database node type hierarchies (right). The lowest level shows example
+        % concrete types of the AiiDA-KKR plugin. Arrows indicate
+        % generalization (abstract base classes). Diamonds indicate aggregation: a
+        % \texttt{Process} creates a \texttt{ProcessNode}, a
+        % \texttt{KkrImpCalculation} acquires a \texttt{Code} object to locate its
+        % JuKKR binaries for execution.}%
+        \label{fig:aiida-node-types}%
+
+        \vspace*{1em}
+        \begin{columns}[t]
+          \begin{column}{0.35\linewidth}
+            \begin{center}
+              \textcolor{fzjgray50}{\faCogs{} Engine}
+            \end{center}
+          \end{column}
+          \begin{column}{0.55\linewidth}
+            \begin{center}
+              \textcolor{fzjgray50}{\faDatabase{} Database}
+            \end{center}
+          \end{column}
+        \end{columns}
+
+        \vspace{1em}
+      \end{center}
+    \end{column}
+  \end{columns}
+
+  \vspace*{0em}
+  \begin{center}
+    \large{\href{https://aiida.net}{aiida.net}}
+  \end{center}
+\end{frame}
+
+
+
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