diff --git a/src/main/java/com/evolveum/midpoint/integration/catalog/IntegrationCatalogApplication.java b/src/main/java/com/evolveum/midpoint/integration/catalog/IntegrationCatalogApplication.java
index 6b817cb..7a545c8 100644
--- a/src/main/java/com/evolveum/midpoint/integration/catalog/IntegrationCatalogApplication.java
+++ b/src/main/java/com/evolveum/midpoint/integration/catalog/IntegrationCatalogApplication.java
@@ -6,9 +6,11 @@
 
 package com.evolveum.midpoint.integration.catalog;
 
+import ch.qos.logback.classic.Logger;
 import com.evolveum.midpoint.integration.catalog.configuration.GithubProperties;
 import com.evolveum.midpoint.integration.catalog.configuration.JenkinsProperties;
 import com.evolveum.midpoint.integration.catalog.repository.ApplicationRepository;
+import org.slf4j.LoggerFactory;
 import org.springframework.boot.CommandLineRunner;
 import org.springframework.boot.SpringApplication;
 import org.springframework.boot.autoconfigure.SpringBootApplication;
@@ -23,9 +25,13 @@ public static void main(String[] args) {
 		SpringApplication.run(IntegrationCatalogApplication.class, args);
 	}
 
+	private static final Logger LOG
+			= (Logger) LoggerFactory.getLogger(IntegrationCatalogApplication.class);
+
 	//check if DB is connected - 0=fine
 	@Bean
 	CommandLineRunner pingDb(ApplicationRepository repo) {
-		return args -> System.out.println("✅ Applications in DB: " + repo.count());
+		LOG.info("Applications in DB: " + repo.count());
+		return args -> System.out.println("Applications in DB: " + repo.count());
 	}
 }
diff --git a/src/main/java/com/evolveum/midpoint/integration/catalog/service/ApplicationService.java b/src/main/java/com/evolveum/midpoint/integration/catalog/service/ApplicationService.java
index 4517a08..1fda9f2 100644
--- a/src/main/java/com/evolveum/midpoint/integration/catalog/service/ApplicationService.java
+++ b/src/main/java/com/evolveum/midpoint/integration/catalog/service/ApplicationService.java
@@ -6,6 +6,8 @@
 
 package com.evolveum.midpoint.integration.catalog.service;
 
+import ch.qos.logback.classic.Logger;
+import com.evolveum.midpoint.integration.catalog.IntegrationCatalogApplication;
 import com.evolveum.midpoint.integration.catalog.dto.*;
 import com.evolveum.midpoint.integration.catalog.common.ItemFile;
 import com.evolveum.midpoint.integration.catalog.mapper.ApplicationMapper;
@@ -23,6 +25,7 @@
 
 import lombok.extern.slf4j.Slf4j;
 import org.kohsuke.github.GHRepository;
+import org.slf4j.LoggerFactory;
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.data.domain.Page;
 import org.springframework.data.domain.PageRequest;
@@ -53,6 +56,9 @@
 @Service
 public class ApplicationService {
 
+    private static final Logger LOG
+            = (Logger) LoggerFactory.getLogger(ApplicationService.class);
+
     private static final long DOWNLOAD_OFFSET_SECONDS = 10;
 
     @Autowired
@@ -601,6 +607,7 @@ public byte[] downloadConnector(UUID versionId, String ip, String userAgent) thr
                 version.getBundleVersion().getDownloadLink() : null;
 
         if (downloadLink == null || downloadLink.isEmpty()) {
+
             throw new IllegalArgumentException("No download link available for version: " + versionId);
         }
 
@@ -748,6 +755,7 @@ public Boolean verify(VerifyBundleInformationForm verifiPayload) {
 
         if (connectorBundle.isEmpty()) {
             err = "No bundle found containing the connector Implementation version with OID " + implementationVersionId + ".";
+
             throw new ResponseStatusException(HttpStatus.NOT_FOUND, err);
         }
 
@@ -804,6 +812,7 @@ public Boolean verify(VerifyBundleInformationForm verifiPayload) {
                     } catch (Exception e) {
 
                         err = e.getLocalizedMessage();
+                        LOG.error(err);
                         sourceImplementationVersion.setErrorMessage(err);
                         throw new ResponseStatusException(HttpStatus.INTERNAL_SERVER_ERROR, err);
                     }
@@ -819,6 +828,7 @@ public Boolean verify(VerifyBundleInformationForm verifiPayload) {
             } catch (Exception e) {
 
                 err = e.getLocalizedMessage();
+                LOG.error(err);
                 sourceImplementationVersion.setErrorMessage(err);
                 throw new ResponseStatusException(HttpStatus.INTERNAL_SERVER_ERROR, err);
             }
@@ -851,6 +861,8 @@ public void moveImplVersionAndDeleteConnectorBundle(ConnectorBundle sourceBundle
         BundleVersion targetBundleVersion, ImplementationVersion sourceImplementationVersion) {
 
         if (sourceBundle.getBundleName() != null && !sourceBundle.getBundleName().isEmpty()) {
+            LOG.error("Illegal state of connector bundle. Bundle already contains implementation version " +
+                    "which is being verified");
 
             throw new ResponseStatusException(HttpStatus.INTERNAL_SERVER_ERROR, "Illegal state of connector" +
                     " bundle. Bundle already contains implementation version which is being verified");
diff --git a/src/main/resources/banner.txt b/src/main/resources/banner.txt
new file mode 100644
index 0000000..ce8c8ad
--- /dev/null
+++ b/src/main/resources/banner.txt
@@ -0,0 +1,15 @@
+
+  _____       _                       _   _                _____      _        _
+ |_   _|     | |                     | | (_)              / ____|    | |      | |
+   | |  _ __ | |_ ___  __ _ _ __ __ _| |_ _  ___  _ __   | |     __ _| |_ __ _| | ___   __ _
+   | | | '_ \| __/ _ \/ _` | '__/ _` | __| |/ _ \| '_ \  | |    / _` | __/ _` | |/ _ \ / _` |
+  _| |_| | | | ||  __/ (_| | | | (_| | |_| | (_) | | | | | |___| (_| | || (_| | | (_) | (_| |
+ |_____|_| |_|\__\___|\__, |_|  \__,_|\__|_|\___/|_| |_|  \_____\__,_|\__\__,_|_|\___/ \__, |
+                       __/ |                                                            __/ |
+                      |___/                                                            |___/  by Evolveum and partners
+
+  Licensed under the EUPL-1.2 or later.
+  Version: ${project.version}
+  Sources: https://github.com/Evolveum/integration-catalog, branch: ${git.branch}, build: ${git.describe}
+  Bug reporting system: ${project.issueManagement.url}
+  Product information: https://midpoint.evolveum.com
diff --git a/src/main/resources/log4j.xml b/src/main/resources/log4j.xml
new file mode 100644
index 0000000..8009830
--- /dev/null
+++ b/src/main/resources/log4j.xml
@@ -0,0 +1,35 @@
+<configuration>
+         <appender name="stdout" class="ch.qos.logback.core.ConsoleAppender">
+             <layout class="ch.qos.logback.classic.PatternLayout">
+                <Pattern>%d{HH:mm:ss.SSS} [%thread] %-5level %class{36}.%M %L - %msg%n</Pattern>
+             </layout>
+           </appender>
+
+    <appender name="time-file-appender"
+              class="ch.qos.logback.core.rolling.RollingFileAppender">
+        <file>integration-catalog.log</file>
+        <rollingPolicy
+                class="ch.qos.logback.core.rolling.SizeAndTimeBasedRollingPolicy">
+            <fileNamePattern>app.%d{yyyy-MM-dd-mm}.%i.log.zip</fileNamePattern>
+            <maxHistory>20</maxHistory>
+        </rollingPolicy>
+        <triggeringPolicy class="ch.qos.logback.core.rolling.SizeBasedTriggeringPolicy">
+            <maxFileSize>10MB</maxFileSize>
+        </triggeringPolicy>
+        <encoder>
+            <pattern>%d{HH:mm:ss.SSS} [%thread] %-5level %class{36}.%M %L - %msg%n</pattern>
+        </encoder>
+
+    </appender>
+
+
+    <root level="INFO">
+        <appender-ref ref="stdout"/>
+        <!--    <appender-ref ref="time-file-appender"/>-->
+    </root>
+
+    <logger name="com.evolveum.midpoint.integration.catalog" level="DEBUG">
+        <appender-ref ref="time-file-appender" />
+    </logger>
+
+</configuration>
\ No newline at end of file