\begin{table}
	\resizebox{\columnwidth}{!}{
		\begin{tabular}{lm{0.2\linewidth}m{0.25\linewidth}m{0.3\linewidth}l}
			\toprule
			Project                                         & Simulation Technique                         & Focus                                                    & Stakeholders                              & Modelling Capability                                                                                                                                            \\
			\midrule
			ExaDigiT~\cite{DBLP:conf/sc/BrewerMKWBHSGGW24}  & CFD/HT, AI/ML                                & Energy Loss\newline Prediction,\newline {Heat Modelling} & HPC Engineers and Operators               & {3D\textsuperscript{$\star$}}, {CH\textsuperscript{$\ddagger$}}, VP\textsuperscript{$\star$}, PE\textsuperscript{$\ddagger$}, RA, SE\textsuperscript{$\dagger$} \\
			\midrule
			SmartDC~\cite{DBLP:conf/noms/ZhangZLZWC22}      & CFD/HT, BIM, AI/ML                           & {Heat Modelling},\newline PUE optimization               & Cloud Datacenter Engineers                & {CH\textsuperscript{$\dagger$}}, PE, {3D\textsuperscript{$\star$}}                                                                                              \\
			\midrule
			DyTwin~\cite{DBLP:conf/sc/TaheriBPRHDEWPM24}    & Gaussian Process Regression, AI/ML           & Anomaly Detection                                        & Cloud Datacenter Operators                & A\textsuperscript{$\star$}, FD, VP\textsuperscript{$\star$}, SE\textsuperscript{$\dagger$}                                                                      \\
			\midrule
			ChatTwin~\cite{DBLP:conf/sensys/LiW0Z0T23}      & \textbf{\Large \sffamily?}                   & Digital Twin\newline Definition Language                 & Cloud Datacenter Engineers                & { 3D\textsuperscript{$\star$}}                                                                                                                                  \\
			\midrule
			Reducio~\cite{DBLP:conf/sensys/CaoW0022}        & POD, Gaussian\newline Process Modelling (ML) & {Heat Modelling}                                         & Edge and Hyper-scale Datacenter Operators & {CH\textsuperscript{$\ddagger$}, 3D\textsuperscript{$\star$}}, SE                                                                                               \\
			\midrule
			NetGraph~\cite{DBLP:conf/sigcomm/HongWDSSHZY21} & Graphs                                       & Network Management                                       & Cloud Datacenter Operators                & VP\textsuperscript{$\star$}, RA\textsuperscript{$\star$},
			N\textsuperscript{$\star$}, SE\textsuperscript{$\dagger$}                                                                                                                                                                                                                                                                                                               \\
			\midrule
			Kalibre~\cite{DBLP:conf/sensys/WangZD0TCWZ20}   & CFD/HT, ML                                   & {Heat Modelling}                                         & Cloud Datacenter Engineers                & {CH\textsuperscript{$\ddagger$}, 3D\textsuperscript{$\star$}}                                                                                                   \\
			\bottomrule
		\end{tabular}
	}
	\caption{Comparison of selected datacenter digital twins. \textbf{Modelling capability:} {3D = Visualizations}; {CH = Cooling/Heat}, PE = Power/Energy Consumption, A = Anomaly Detection, N = Network Modelling, SE = Scenario Exploration, VP = Virtual Prototyping, FD = Federation, RA = Resource Allocation; \textbf{Data Analytics}: $\ddagger$ = Predictive Analysis; $\star$ = Descriptive Analysis, $\dagger$ = Prescriptive Analysis.}
	\label{tab:dt_features_comparison}
\end{table}
% Autonomous decisions (autonomous twinning) from~\cite{DBLP:conf/sc/BrewerMKWBHSGGW24} is inherent to digital twinning -- it is better left unsaid in the table.
% I.e., the foundation of any DT is autonomous decisions, so without them they don't qualify as a DT.
% ChatTwin mentions that they evaluate their system on their own-engineered digital twin, but they absolutely not name it. Who knows why.
