diff --git a/README.md b/README.md
index af4ada2..25fca2e 100644
--- a/README.md
+++ b/README.md
@@ -1,4 +1,4 @@
-Simulation server cluster
+Simulation server cluster (discrete-event simulation). Chosing an optimal C value (number of specialized clusters) depending on arrival rate.
 
 ## How to use
 usage:
@@ -22,3 +22,10 @@ Number of runs: 10
 Minimum number of runs: 5  
 confidence level: 95%  
 best C (running simulation for lamba=1 only): False
+
+## structure
+simulation.py contains the code for the simulations.  
+main.py contains a minimal CLI argument parser.  
+
+A class is used to represent a simulation, 2 wrappers are then used. One to run the simulations and produce statistics related to the mean response time, one to produce statistics related to the mean loss rate.  
+Multiprocessing library is used for parallelism, as multiple simulations are needed with each set of parameters they can be executed in parallel.