input: from typing import List, Tuple
  
  def create_data_visualization_dashboard(x: List[int], y: List[int], figsize: Tuple[int, int] = (10, 6)) -> None:
      """ Create a data visualization dashboard using Matplotlib.
      
      >>> create_data_visualization_dashboard([1,2,3,4,5], [10,25,30,50,80])
      (A plot titled 'My Data Visualization Dashboard' with x-axis labeled 'X-axis' and y-axis labeled 'Y-axis')
      
      """
      import matplotlib.pyplot as plt
  
      # Create the figure and set the size
      fig = plt.figure(figsize=figsize)
  
      # Configure the plot
      plt.plot(x, y, color='green', marker='o', linestyle='dashed', linewidth=2, markersize=12)
      plt.title("My Data Visualization Dashboard")
      plt.xlabel('X-axis')
      plt.ylabel('Y-axis')
  
      # Show the plot
      plt.show()
output:     # Save the plot to a file
      plt.savefig('data_visualization_dashboard.png')
  
      # Close the plot to free up memory
      plt.close(fig)