diff --git a/simulation_tool/src/simulation_tool/models.py b/simulation_tool/src/simulation_tool/models.py
new file mode 100644
index 0000000..cb3f78a
--- /dev/null
+++ b/simulation_tool/src/simulation_tool/models.py
@@ -0,0 +1,63 @@
+from __future__ import annotations
+
+import json
+import logging
+from dataclasses import dataclass, field, asdict
+from typing import List, Dict, Any
+
+
+logger = logging.getLogger(__name__)
+if not logger.handlers:
+    handler = logging.StreamHandler()
+    formatter = logging.Formatter('%(asctime)s - %(levelname)s - %(name)s - %(message)s')
+    handler.setFormatter(formatter)
+    logger.addHandler(handler)
+    logger.setLevel(logging.INFO)
+
+
+class SimulationResultsValidationError(Exception):
+    """Custom exception for validation errors in SimulationResults."""
+
+
+@dataclass
+class SimulationResults:
+    """Repräsentiert die Ergebnisse einer Simulation.
+
+    Attributes:
+        time_distributions: Liste der simulierten Zeitverteilungen (z. B. Reaktionszeiten oder Latenzen).
+        outlier_occurrences: Anzahl erkannter Ausreißer in der Simulation.
+    """
+
+    time_distributions: List[float] = field(default_factory=list)
+    outlier_occurrences: int = 0
+
+    def __post_init__(self) -> None:
+        """Validiert die Eingabedaten gemäß data_models und Constraints."""
+        logger.debug("Validating SimulationResults instance...")
+        if not isinstance(self.time_distributions, list):
+            raise SimulationResultsValidationError("time_distributions must be a list of floats.")
+        if not all(isinstance(v, (float, int)) for v in self.time_distributions):
+            raise SimulationResultsValidationError("All elements in time_distributions must be floats or ints.")
+        if not isinstance(self.outlier_occurrences, int):
+            raise SimulationResultsValidationError("outlier_occurrences must be an integer.")
+        if self.outlier_occurrences < 0:
+            raise SimulationResultsValidationError("outlier_occurrences must be non-negative.")
+        logger.info(
+            "SimulationResults validated: %d distributions, %d outliers.",
+            len(self.time_distributions),
+            self.outlier_occurrences
+        )
+
+    def to_json(self) -> Dict[str, Any]:
+        """Serialisiert die Simulationsergebnisse als Dictionary, bereit für JSON-Ausgabe."""
+        logger.debug("Serializing SimulationResults to JSON-compatible dict.")
+        result = asdict(self)
+        # Ensure numeric type consistency (floats)
+        result["time_distributions"] = [float(v) for v in self.time_distributions]
+        return result
+
+    def __repr__(self) -> str:
+        return (
+            f"SimulationResults(time_distributions={len(self.time_distributions)} entries, "
+            f"outlier_occurrences={self.outlier_occurrences})"
+        )
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