diff --git a/src/Makefile b/src/Makefile
index 3eb2561..6f61f28 100644
--- a/src/Makefile
+++ b/src/Makefile
@@ -2,15 +2,15 @@ ECHO = @echo
 GCC = g++
 RM = @rm -f
 CCFLAGS = -c -O3 -g -std=c++11 -pedantic -Wall 
-OBJETS = $(SRC:.cpp=.o)
 SRC = $(wildcard *.cpp) 
-EXE = deployer
 BIN = ../bin
-OBJETS_DIR = $(OBJETS:%=$(BIN)/%)
-EXE_DIR = $(EXE:%=$(BIN)/%)
+EXE = deployer
+OBJECTS = $(patsubst %.cpp,$(BIN)/%.o,$(SRC))
 LIBRARIES = 
 
-$(EXE_DIR) : $(OBJETS_DIR)
+$(EXE) : $(OBJECTS)
+	$(ECHO) "objects  $(OBJECTS) exe $(EXE) "
+
 	$(ECHO) "-Linking $(EXE)-"
 	$(GCC) -o $@ $^ $(LIBRARIES)
 	
@@ -21,4 +21,4 @@ $(BIN)/%.o:%.cpp
 .PHONY: clean 
 clean:
 	$(ECHO) "-Cleaning-"
-	$(RM) $(OBJETS) $(EXE)
\ No newline at end of file
+	$(RM) $(OBJECTS) $(EXE)
\ No newline at end of file
diff --git a/src/Module.cpp b/src/Module.cpp
index f1db616..6f90997 100644
--- a/src/Module.cpp
+++ b/src/Module.cpp
@@ -4,7 +4,6 @@
 
 #include "Module.h"
 
-Module::Module(char * serv):service(serv){}
 Module::~Module(){}
 
 
diff --git a/src/Module.h b/src/Module.h
index bf33d3f..0fc1e9e 100644
--- a/src/Module.h
+++ b/src/Module.h
@@ -10,8 +10,8 @@
 class Module 
 {
     protected:
-    Module(char * serv);
-    virtual ~Module();
+    Module(){};
+    virtual ~Module()=0;
 
     private:
     bool activated; //true if the service requires this module
diff --git a/src/Service.cpp b/src/Service.cpp
new file mode 100644
index 0000000..309516d
--- /dev/null
+++ b/src/Service.cpp
@@ -0,0 +1,27 @@
+//deployer Service implementation
+// Copyright (C) 2024 Jean-Cloud
+// GNU General Public License v3
+
+#include "Service.h"
+
+int Service::getUserID () const
+{
+    return userID;
+}
+string Service::getUsername() const
+{
+    return username;
+}
+list<string> Service::getServers() const
+{
+    return servers;
+}
+
+ostream & operator << (ostream & out, const Service & s)
+{
+    out << "userID: " << s.userID << endl << "username: " << s.username << endl << "servers: ";
+    for (string server : s.servers){
+        out << server << " " << endl;
+    }
+    return out;
+}
\ No newline at end of file
diff --git a/src/Service.h b/src/Service.h
new file mode 100644
index 0000000..a5c50a8
--- /dev/null
+++ b/src/Service.h
@@ -0,0 +1,28 @@
+//deployer Service header
+// Copyright (C) 2024 Jean-Cloud
+// GNU General Public License v3
+
+#if !defined(SERVICE_H)
+#define SERVICE_H
+
+#include <iostream>
+#include <string>
+#include  <string>
+#include <list>
+
+using namespace std;
+
+class Service {
+    public:
+    Service(int aUserID, string aUsername, list <string> aServers):userID(aUserID),username(aUsername),servers(aServers){}
+    ~Service(){}
+    int getUserID () const;
+    string getUsername() const;
+    list<string> getServers() const;
+    friend ostream & operator<<(ostream & out, const Service & s); 
+    private: 
+    int userID;
+    string username;
+    list <string> servers;
+};
+#endif
\ No newline at end of file
diff --git a/src/Services.cpp b/src/Services.cpp
index dc2b86b..07b2502 100644
--- a/src/Services.cpp
+++ b/src/Services.cpp
@@ -9,18 +9,59 @@
 #include <string>
 #include "Services.h"
 
+//constructor
 Services::Services(string ServicesCSV)
 {
     services=readServicesFromCSV(ServicesCSV);
 }
+//destructor
 Services::~Services(){}
 
+//public methods
+vector<Service> Services::getServices()const
+{
+    return services;
+}
 
-vector <serviceData> Services::readServicesFromCSV (string CSV) const 
+const Service* Services::findByUsername(string aUsername) const
+{
+    for (const Service & service : services){
+        if (service.getUsername().compare(aUsername)==0){
+                return &service;
+        }
+    }
+    return nullptr;
+}
+
+const Service * Services::findByID(int aUserID) const
+{
+    for (const Service & service : services){
+        if (service.getUserID()==aUserID){
+            return &service;
+        }
+    }    
+    return nullptr;
+}
+
+list<const Service*> Services::findByServer(string aServer) const
+{
+    list<const Service*> result;
+    for (const Service & service : services){
+        for (string server : service.getServers()){
+            if(server.compare(aServer)==0){
+                result.push_back(&service);
+            }
+        }
+    }    
+    return result;   
+}
+
+//private methods
+vector <Service> Services::readServicesFromCSV (string CSV) const 
 {
     //this method extracts the list of uid|username|servers from the services.csv file 
-    //and returns them in a vector <serviceData>, with serviceData a structure defined in the header
-    vector <serviceData> result;
+    //and returns them in a vector <Service>, with Service a structure defined in the header
+    vector <Service> result;
     ifstream streamServices(CSV); 
     if (!streamServices){
         cout << "Invalid services.csv file." << endl;
@@ -29,8 +70,8 @@ vector <serviceData> Services::readServicesFromCSV (string CSV) const
         string tmpUserID; //used before converting to int
         int userID;
         string username;
-        string serveur;
-        list <string> serveurs;
+        string server;
+        list <string> servers;
         while(getline(streamServices,line)){
             if (line.empty() || line[0] == '#') { //not taking comments and empty lines into account
                 continue; 
@@ -39,12 +80,13 @@ vector <serviceData> Services::readServicesFromCSV (string CSV) const
             getline(streamLine,tmpUserID,';'); //extracting the userID
             userID=stoi(tmpUserID);
             getline(streamLine,username,';'); //extracting the username
-            while(getline(streamLine,serveur,';')){ //extracting the server(s)
-                serveurs.push_back(serveur);
+            while(getline(streamLine,server,';')){ //extracting the server(s)
+                servers.push_back(server);
             }         
-            serviceData entry = {userID,username,serveurs};
+            Service entry = {userID,username,servers};
             result.push_back(entry);
         }
     }
     return result;
-}
\ No newline at end of file
+}
+
diff --git a/src/Services.h b/src/Services.h
index cff7efd..0d21a23 100644
--- a/src/Services.h
+++ b/src/Services.h
@@ -9,24 +9,23 @@
 #include <cstring>
 #include <list>
 #include <vector>
+#include "Service.h"
 
 using namespace std;
 
-struct serviceData {
-    int userID;
-    string username;
-    list <string> serveurs;
-};
 
 class Services 
 //extracts the list of uid|username|service from the services.csv file 
 {
     public:
     Services(string servicesCSV="../src/services.csv");
+    vector<Service> getServices() const;
+    const Service * findByUsername(string aUsername) const;
+    const Service * findByID(int aUserID) const;
+    list<const Service*> findByServer(string aServer) const;
     ~Services();
     private:
-    vector <serviceData> readServicesFromCSV (string CSV) const;
-    vector <serviceData> services;
-
+    vector <Service> readServicesFromCSV (string CSV) const;
+    vector <Service> services;
 };
 #endif
\ No newline at end of file
diff --git a/src/main.cpp b/src/main.cpp
index 821aa4c..9256ffb 100644
--- a/src/main.cpp
+++ b/src/main.cpp
@@ -37,7 +37,13 @@ int main(int argc, char *argv[])
             exit(1);
         }
         Services myServices=Services("../src/services.csv");
-        
+        const Service * ptr_myService=myServices.findByID(1);
+        if (ptr_myService==nullptr){
+            cout<< "service not found"<<endl;
+        }else{
+            cout << "service found" << endl;
+            cout << *ptr_myService << endl;
+        }        
     }
     return 0;
 }