diff --git a/src/main/java/cz/trask/migration/AbstractProcess.java b/src/main/java/cz/trask/migration/AbstractProcess.java
index 1d8ca05..18cf186 100644
--- a/src/main/java/cz/trask/migration/AbstractProcess.java
+++ b/src/main/java/cz/trask/migration/AbstractProcess.java
@@ -24,6 +24,7 @@ import com.fasterxml.jackson.dataformat.yaml.YAMLGenerator;
 
 import cz.trask.migration.config.ConfigManager;
 import cz.trask.migration.model.APIList;
+import cz.trask.migration.model.ApplicationConfig;
 import cz.trask.migration.model.HttpResponse;
 import cz.trask.migration.model.RegisterResponse;
 import cz.trask.migration.model.TokenResponse;
@@ -40,7 +41,7 @@ public abstract class AbstractProcess {
 	public static ObjectMapper mapper;
 	public static ObjectMapper mapperYaml;
 
-	protected ConfigManager config = ConfigManager.getInstance();
+	protected ApplicationConfig config;
 
 	protected AbstractProcess() {
 		mapper = new ObjectMapper();
@@ -51,6 +52,8 @@ public abstract class AbstractProcess {
 		yamlFactory.configure(YAMLGenerator.Feature.SPLIT_LINES, false);
 		mapperYaml = new ObjectMapper(yamlFactory);
 		mapper.configure(DeserializationFeature.FAIL_ON_UNKNOWN_PROPERTIES, false);
+		
+		config = ConfigManager.getInstance().getConfig();
 
 		setTrustStoreCredentials();
 
@@ -62,18 +65,18 @@ public abstract class AbstractProcess {
 	}
 
 	protected void setTrustStoreCredentials() {
-		log.info("Setting truststore: " + config.getTruststorePath());
-		System.setProperty("javax.net.ssl.trustStore", config.getTruststorePath());
-		System.setProperty("javax.net.ssl.trustStorePassword", config.getTruststorePassword());
+		log.info("Setting truststore: " + config.getTrustStore().getPath());
+		System.setProperty("javax.net.ssl.trustStore", config.getTrustStore().getPath());
+		System.setProperty("javax.net.ssl.trustStorePassword", config.getTrustStore().getPassword());
 	}
 	
 	protected TokenResponse authenticateToWso2AndGetToken() throws Exception {
-		RegisterResponse register = register(config.getSourceRegistrationApiUrl(), config.getSourceWso2User());
+		RegisterResponse register = register(config.getSource().getRegistrationApiUrl(), config.getSource().getWso2User());
 
 		String clientId = register.getClientId();
 		log.info("Registered with clientId: {}", clientId);
 
-		TokenResponse token = getToken(config.getSourcePublisherTokenUrl(), config.getSourceWso2User(), register,
+		TokenResponse token = getToken(config.getSource().getPublisherTokenUrl(), config.getSource().getWso2User(), register,
 				"apim:api_view apim:api_create apim:api_manage apim:api_delete apim:api_publish "
 						+ "apim:subscription_view apim:subscription_block apim:subscription_manage apim:external_services_discover "
 						+ "apim:threat_protection_policy_create apim:threat_protection_policy_manage apim:document_create apim:document_manage "
diff --git a/src/main/java/cz/trask/migration/config/ConfigManager.java b/src/main/java/cz/trask/migration/config/ConfigManager.java
index 04d1996..eb444e1 100644
--- a/src/main/java/cz/trask/migration/config/ConfigManager.java
+++ b/src/main/java/cz/trask/migration/config/ConfigManager.java
@@ -3,85 +3,19 @@ package cz.trask.migration.config;
 import java.io.File;
 import java.io.InputStream;
 import java.nio.file.Files;
-import java.util.Properties;
 
-import org.apache.logging.log4j.LogManager;
-import org.apache.logging.log4j.Logger;
+import cz.trask.migration.AbstractProcess;
+import cz.trask.migration.model.ApplicationConfig;
+import lombok.extern.log4j.Log4j2;
 
+@Log4j2
 public final class ConfigManager {
 
-	/* -------------------------------------------------------------------- */
-	/* LOGIC & CONSTANTS */
-	/* -------------------------------------------------------------------- */
-
-	private static final Logger log = LogManager.getLogger(ConfigManager.class);
-
-	private static final String PROPERTY_FILENAME = "apicurio-migrator.properties";
-
-	// SOURCE
-	public static final String PROP_SOURCE_REGISTRATION_API_URL = "SOURCE_REGISTRATION_API_URL";
-	public static final String PROP_SOURCE_PUBLISHER_API_URL = "SOURCE_PUBLISHER_API_URL";
-	public static final String PROP_SOURCE_DEVPORTAL_API_URL = "SOURCE_DEVPORTAL_API_URL";
-	public static final String PROP_SOURCE_PUBLISHER_TOKEN_URL = "SOURCE_PUBLISHER_TOKEN_URL";
-	public static final String PROP_SOURCE_WSO2_USER = "SOURCE_WSO2_USER";
-
-	// TARGET
-	public static final String PROP_TARGET_REGISTRATION_API_URL = "TARGET_REGISTRATION_API_URL";
-	public static final String PROP_TARGET_PUBLISHER_API_URL = "TARGET_PUBLISHER_API_URL";
-	public static final String PROP_TARGET_DEVPORTAL_API_URL = "TARGET_DEVPORTAL_API_URL";
-	public static final String PROP_TARGET_PUBLISHER_TOKEN_URL = "TARGET_PUBLISHER_TOKEN_URL";
-	public static final String PROP_TARGET_WSO2_USER = "TARGET_WSO2_USER";
-
-	// TRUSTSTORE
-	public static final String PROP_TRUSTSTORE_PATH = "TRUSTSTORE_PATH";
-	public static final String PROP_TRUSTSTORE_PASSWORD = "TRUSTSTORE_PASSWORD";
-
-	// URL PATTERNS
-	public static final String PROP_PUBLISHER_URL_PATTERN = "PUBLISHER_URL_PATTERN";
-	public static final String PROP_DEVPORTAL_URL_PATTERN = "DEVPORTAL_URL_PATTERN";
-
-	// APICURIO & GROUP
-	public static final String PROP_APICURIO_API_URL = "APICURIO_API_URL";
-	public static final String PROP_DEFAULT_API_GROUP = "DEFAULT_API_GROUP";
-
-	// MAX THREADS
-	public static final String PROP_MAX_THREADS = "MAX_THREADS";
-
-	/* -------------------------------------------------------------------- */
-	/* CONFIGURATION FIELDS */
-	/* -------------------------------------------------------------------- */
-
-	private final String sourceRegistrationApiUrl;
-	private final String sourcePublisherApiUrl;
-	private final String sourceDevportalApiUrl;
-	private final String sourcePublisherTokenUrl;
-	private final String sourceWso2User;
-
-	private final String targetRegistrationApiUrl;
-	private final String targetPublisherApiUrl;
-	private final String targetDevportalApiUrl;
-	private final String targetPublisherTokenUrl;
-	private final String targetWso2User;
-
-	private final String truststorePath;
-	private final String truststorePassword;
-
-	private final String publisherUrlPattern;
-	private final String devportalUrlPattern;
-
-	private final String apicurioApiUrl;
-	private final String defaultApiGroup;
-
-	private final int maxThreads;
+	private static final String PROPERTY_FILENAME = "apicurio-migrator.yaml";
 
 	private static volatile ConfigManager INSTANCE;
 
-	/** Všechny načtené hodnoty. */
-	private final Properties props = new Properties();
-
-	/* -------------------------------------------------------------------- */
-	/* SINGLETON – lazy‑initialization‑on-demand holder */
-	/* -------------------------------------------------------------------- */
+	private static ApplicationConfig config = new ApplicationConfig();
 
 	private ConfigManager() {
 
@@ -116,7 +50,7 @@ public final class ConfigManager {
 
 		try (InputStream input = in) {
 			if (input != null) {
-				props.load(input);
+				config = AbstractProcess.mapperYaml.readValue(input, ApplicationConfig.class);
 				log.info("Property file loaded successfully.");
 			} else {
 				log.warn("No property source available; proceeding with defaults where possible.");
@@ -124,29 +58,6 @@ public final class ConfigManager {
 		} catch (Exception e) {
 			log.error("Cannot load property file.", e);
 		}
-
-		sourceRegistrationApiUrl = getRequired(PROP_SOURCE_REGISTRATION_API_URL);
-		sourcePublisherApiUrl = getRequired(PROP_SOURCE_PUBLISHER_API_URL);
-		sourceDevportalApiUrl = getRequired(PROP_SOURCE_DEVPORTAL_API_URL);
-		sourcePublisherTokenUrl = getRequired(PROP_SOURCE_PUBLISHER_TOKEN_URL);
-		sourceWso2User = getRequired(PROP_SOURCE_WSO2_USER);
-
-		targetRegistrationApiUrl = getRequired(PROP_TARGET_REGISTRATION_API_URL);
-		targetPublisherApiUrl = getRequired(PROP_TARGET_PUBLISHER_API_URL);
-		targetDevportalApiUrl = getRequired(PROP_TARGET_DEVPORTAL_API_URL);
-		targetPublisherTokenUrl = getRequired(PROP_TARGET_PUBLISHER_TOKEN_URL);
-		targetWso2User = getRequired(PROP_TARGET_WSO2_USER);
-
-		truststorePath = getRequired(PROP_TRUSTSTORE_PATH);
-		truststorePassword = getRequired(PROP_TRUSTSTORE_PASSWORD);
-
-		publisherUrlPattern = getRequired(PROP_PUBLISHER_URL_PATTERN);
-		devportalUrlPattern = getRequired(PROP_DEVPORTAL_URL_PATTERN);
-
-		apicurioApiUrl = getRequired(PROP_APICURIO_API_URL);
-		defaultApiGroup = getRequired(PROP_DEFAULT_API_GROUP);
-
-		maxThreads = Integer.parseInt(props.getProperty(PROP_MAX_THREADS, "10"));
 	}
 
 	public static ConfigManager getInstance() {
@@ -160,83 +71,7 @@ public final class ConfigManager {
 		return INSTANCE;
 	}
 
-	private String getRequired(String key) {
-		String value = props.getProperty(key);
-		if (value == null) {
-			throw new IllegalStateException("Missing required property: " + key);
-		}
-		return value.trim();
-	}
-
-	/* -------------------------------------------------------------------- */
-	/* PUBLIC GETTERS */
-	/* -------------------------------------------------------------------- */
-
-	public String getSourceRegistrationApiUrl() {
-		return sourceRegistrationApiUrl;
-	}
-
-	public String getSourcePublisherApiUrl() {
-		return sourcePublisherApiUrl;
-	}
-
-	public String getSourceDevportalApiUrl() {
-		return sourceDevportalApiUrl;
-	}
-
-	public String getSourcePublisherTokenUrl() {
-		return sourcePublisherTokenUrl;
-	}
-
-	public String getSourceWso2User() {
-		return sourceWso2User;
-	}
-
-	public String getTargetRegistrationApiUrl() {
-		return targetRegistrationApiUrl;
-	}
-
-	public String getTargetPublisherApiUrl() {
-		return targetPublisherApiUrl;
-	}
-
-	public String getTargetDevportalApiUrl() {
-		return targetDevportalApiUrl;
-	}
-
-	public String getTargetPublisherTokenUrl() {
-		return targetPublisherTokenUrl;
-	}
-
-	public String getTargetWso2User() {
-		return targetWso2User;
-	}
-
-	public String getTruststorePath() {
-		return truststorePath;
-	}
-
-	public String getTruststorePassword() {
-		return truststorePassword;
-	}
-
-	public String getPublisherUrlPattern() {
-		return publisherUrlPattern;
-	}
-
-	public String getDevportalUrlPattern() {
-		return devportalUrlPattern;
-	}
-
-	public String getApicurioApiUrl() {
-		return apicurioApiUrl;
-	}
-
-	public String getDefaultApiGroup() {
-		return defaultApiGroup;
-	}
-
-	public int getMaxThreads() {
-		return maxThreads;
+	public ApplicationConfig getConfig() {
+		return config;
 	}
 }
diff --git a/src/main/java/cz/trask/migration/impl/v32/ImportToApicurio.java b/src/main/java/cz/trask/migration/impl/v32/ImportToApicurio.java
index 5326723..cd7e647 100644
--- a/src/main/java/cz/trask/migration/impl/v32/ImportToApicurio.java
+++ b/src/main/java/cz/trask/migration/impl/v32/ImportToApicurio.java
@@ -44,7 +44,7 @@ public class ImportToApicurio extends AbstractProcess {
 	private final RegistryClient client;
 
 	public ImportToApicurio() throws Exception {
-		this.client = RegistryClientFactory.create(config.getApicurioApiUrl());
+		this.client = RegistryClientFactory.create(config.getApicurio().getApiUrl());
 	}
 
 	/**
@@ -58,7 +58,7 @@ public class ImportToApicurio extends AbstractProcess {
 
 			TokenResponse token = authenticateToWso2AndGetToken();
 
-			APIList apis = getList(config.getSourcePublisherApiUrl(), token);
+			APIList apis = getList(config.getSource().getPublisherApiUrl(), token);
 			if (apis == null || apis.getList() == null || apis.getList().length == 0) {
 				throw new IllegalStateException(
 						"No APIs to export that match your criteria! Check the name of the API you want to export.");
@@ -105,16 +105,16 @@ public class ImportToApicurio extends AbstractProcess {
 					"Bearer " + tokenResponse.getAccess_token());
 
 			// 1) Retrieve basic information
-			HttpResponse apiInfoResp = makeRequest("GET", config.getSourceDevportalApiUrl() + "/apis/" + api.getId(),
+			HttpResponse apiInfoResp = makeRequest("GET", config.getSource().getDevPortalApiUrl() + "/apis/" + api.getId(),
 					httpHeaders, Collections.emptyMap());
 
 			HttpResponse subsResp = makeRequest("GET",
-					config.getSourcePublisherApiUrl() + "/subscriptions?apiId=" + api.getId(), httpHeaders,
+					config.getSource().getPublisherApiUrl() + "/subscriptions?apiId=" + api.getId(), httpHeaders,
 					Collections.emptyMap());
 
 			// 2) Export the API as a zip
 			HttpResponse exportedZip = makeRequest("GET",
-					config.getSourcePublisherApiUrl() + "/apis/export?apiId=" + api.getId(), httpHeaders,
+					config.getSource().getPublisherApiUrl() + "/apis/export?apiId=" + api.getId(), httpHeaders,
 					Collections.emptyMap(), true);
 
 			List<ZipEntryData> zipEntries = ZipUtils.extractFilesFromZip(exportedZip.getResponseBytes());
@@ -147,8 +147,8 @@ public class ImportToApicurio extends AbstractProcess {
 
 			// 5) Build the description that contains the publisher & devportal URLs
 			String baseDesc = api.getDescription() != null ? api.getDescription() : "";
-			String pubUrl = config.getPublisherUrlPattern().replace("{API_ID}", api.getId());
-			String devPortUrl = config.getDevportalUrlPattern().replace("{API_ID}", api.getId());
+			String pubUrl = config.getPatterns().getPublisherUrlPattern().replace("{API_ID}", api.getId());
+			String devPortUrl = config.getPatterns().getDevPortalUrlPattern().replace("{API_ID}", api.getId());
 
 			String fullDesc = baseDesc + " ***** PUBLISHER URL ***** " + pubUrl + " ***** DEVPORTAL URL ***** "
 					+ devPortUrl;
@@ -159,7 +159,7 @@ public class ImportToApicurio extends AbstractProcess {
 			updateSwagger(swaggerObj, apiMap, fullDesc);
 
 			// 7) Prepare artifact creation/update
-			String group = config.getDefaultApiGroup();
+			String group = config.getApicurio().getDefaultApiGroup();
 			String mainArtifactId = api.getName() + api.getContext();
 
 			VersionSearchResults existingArtifacts;
diff --git a/src/main/java/cz/trask/migration/impl/v45/ExportToWso2FromV32.java b/src/main/java/cz/trask/migration/impl/v45/ExportToWso2FromV32.java
index a5fca2a..8baf7b6 100644
--- a/src/main/java/cz/trask/migration/impl/v45/ExportToWso2FromV32.java
+++ b/src/main/java/cz/trask/migration/impl/v45/ExportToWso2FromV32.java
@@ -48,7 +48,7 @@ public class ExportToWso2FromV32 extends AbstractProcess {
 	private final RegistryClient client;
 
 	public ExportToWso2FromV32() throws Exception {
-		this.client = RegistryClientFactory.create(config.getApicurioApiUrl());
+		this.client = RegistryClientFactory.create(config.getApicurio().getApiUrl());
 	}
 
 	/**
@@ -62,7 +62,7 @@ public class ExportToWso2FromV32 extends AbstractProcess {
 
 			TokenResponse token = authenticateToWso2AndGetToken();
 
-			ArtifactSearchResults apis = client.searchArtifacts(config.getDefaultApiGroup(), null, null, null, null,
+			ArtifactSearchResults apis = client.searchArtifacts(config.getApicurio().getDefaultApiGroup(), null, null, null, null,
 					null, null, null, null);
 
 			log.info("Found {} APIs", apis.getCount());
@@ -92,12 +92,12 @@ public class ExportToWso2FromV32 extends AbstractProcess {
 		try {
 			log.info("Processing API {} of {}", index, total);
 
-			VersionSearchResults versions = client.listArtifactVersions(config.getDefaultApiGroup(), api.getId(), null,
+			VersionSearchResults versions = client.listArtifactVersions(config.getApicurio().getDefaultApiGroup(), api.getId(), null,
 					null);
 
 			for (SearchedVersion ver : versions.getVersions()) {
 				log.info(" - Found version: {}", ver.getVersion());
-				List<ArtifactReference> ref = client.getArtifactReferencesByCoordinates(config.getDefaultApiGroup(),
+				List<ArtifactReference> ref = client.getArtifactReferencesByCoordinates(config.getApicurio().getDefaultApiGroup(),
 						api.getId(), ver.getVersion());
 				if (ref != null && !ref.isEmpty()) {
 					log.info("Artifact has {} references", ref.size());
@@ -135,7 +135,7 @@ public class ExportToWso2FromV32 extends AbstractProcess {
 	private int publishApiToWso2(String fileName, byte[] data, TokenResponse tokenResponse) {
 		int responseCode = -1;
 		try {
-			String url = config.getTargetPublisherApiUrl()
+			String url = config.getTarget().getPublisherApiUrl()
 					.concat(String.format("?preserveProvider=false&overwrite=true"));
 
 			log.info("API Import URL: " + url);
diff --git a/src/main/java/cz/trask/migration/model/ApplicationConfig.java b/src/main/java/cz/trask/migration/model/ApplicationConfig.java
new file mode 100644
index 0000000..3880002
--- /dev/null
+++ b/src/main/java/cz/trask/migration/model/ApplicationConfig.java
@@ -0,0 +1,75 @@
+package cz.trask.migration.model;
+
+import com.fasterxml.jackson.annotation.JsonProperty;
+
+import lombok.Data;
+
+@Data
+public class ApplicationConfig {
+
+	@JsonProperty("source")
+	private Source source;
+	@JsonProperty("target")
+	private Target target;
+	@JsonProperty("truststore")
+	private TrustStore trustStore;
+	@JsonProperty("patterns")
+	private Patterns patterns;
+	@JsonProperty("apicurio")
+	private Apicurio apicurio;
+	@JsonProperty("max_threads")
+	private int maxThreads;
+
+	@Data
+	public static class Source {
+		@JsonProperty("registration_api_url")
+		private String registrationApiUrl;
+		@JsonProperty("publisher_api_url")
+		private String publisherApiUrl;
+		@JsonProperty("devportal_api_url")
+		private String devPortalApiUrl;
+		@JsonProperty("publisher_token_url")
+		private String publisherTokenUrl;
+		@JsonProperty("wso2_user")
+		private String wso2User;
+
+	}
+
+	@Data
+	public static class TrustStore {
+		@JsonProperty("path")
+		private String path;
+		@JsonProperty("password")
+		private String password;
+	}
+
+	@Data
+	public static class Patterns {
+		@JsonProperty("publisher_url_pattern")
+		private String publisherUrlPattern;
+		@JsonProperty("devportal_url_pattern")
+		private String devPortalUrlPattern;
+	}
+
+	@Data
+	public static class Apicurio {
+		@JsonProperty("api_url")
+		private String apiUrl;
+		@JsonProperty("default_api_group")
+		private String defaultApiGroup;
+	}
+
+	@Data
+	public static class Target {
+		@JsonProperty("registration_api_url")
+		private String registrationApiUrl;
+		@JsonProperty("publisher_api_url")
+		private String publisherApiUrl;
+		@JsonProperty("devportal_api_url")
+		private String devPortalApiUrl;
+		@JsonProperty("publisher_token_url")
+		private String publisherTokenUrl;
+		@JsonProperty("wso2_user")
+		private String wso2User;
+	}
+}
diff --git a/src/main/resources/apicurio-migrator.properties b/src/main/resources/apicurio-migrator.properties
deleted file mode 100644
index be3f6fe..0000000
--- a/src/main/resources/apicurio-migrator.properties
+++ /dev/null
@@ -1,25 +0,0 @@
-# Source WSO2 API Manager v3.2.0
-SOURCE_REGISTRATION_API_URL = https://localhost:9443/client-registration/v0.17/register
-SOURCE_PUBLISHER_API_URL = https://localhost:9443/api/am/publisher
-SOURCE_DEVPORTAL_API_URL = https://localhost:9443/api/am/store
-SOURCE_PUBLISHER_TOKEN_URL = https://localhost:9443/oauth2/token
-SOURCE_WSO2_USER = YWRtaW46YWRtaW4=
-
-# Target WSO2 API Manager v4.5.0
-TARGET_REGISTRATION_API_URL = https://localhost:9443/client-registration/v0.17/register
-TARGET_PUBLISHER_API_URL = https://localhost:9443/api/am/publisher/v4/apis/import
-TARGET_DEVPORTAL_API_URL = https://localhost:9443/api/am/devportal
-TARGET_PUBLISHER_TOKEN_URL = https://localhost:9443/oauth2/token
-TARGET_WSO2_USER = YWRtaW46YWRtaW4=
-
-TRUSTSTORE_PATH = client-truststore.jks
-TRUSTSTORE_PASSWORD = wso2carbon
-
-PUBLISHER_URL_PATTERN = https://api-developers.dev.koop.appl.services/publisher/apis/{API_ID}/overview
-DEVPORTAL_URL_PATTERN = https://api-developers.dev.koop.appl.services/devportal/apis/{API_ID}/overview
-
-#APICURIO_API_URL = http://10.0.0.190:8080/apis/registry/v2
-APICURIO_API_URL = http://apicurio:8095/apis/registry/v2
-DEFAULT_API_GROUP = api
-
-MAX_THREADS = 1
\ No newline at end of file
diff --git a/src/main/resources/apicurio-migrator.yaml b/src/main/resources/apicurio-migrator.yaml
new file mode 100644
index 0000000..860ade7
--- /dev/null
+++ b/src/main/resources/apicurio-migrator.yaml
@@ -0,0 +1,27 @@
+source:
+  registration_api_url: https://localhost:9443/client-registration/v0.17/register
+  publisher_api_url: https://localhost:9443/api/am/publisher
+  devportal_api_url: https://localhost:9443/api/am/store
+  publisher_token_url: https://localhost:9443/oauth2/token
+  wso2_user: YWRtaW46YWRtaW4=
+  
+target:
+  registration_api_url: https://localhost:9443/client-registration/v0.17/register
+  publisher_api_url: https://localhost:9443/api/am/publisher/v4/apis/import
+  devportal_api_url: https://localhost:9443/api/am/devportal
+  publisher_token_url: https://localhost:9443/oauth2/token
+  wso2_user: YWRtaW46YWRtaW4=
+
+truststore:
+  path: client-truststore.jks
+  password: wso2carbon
+
+patterns:
+  publisher_url_pattern: https://api-developers.dev.koop.appl.services/publisher/apis/{API_ID}/overview
+  devportal_url_pattern: https://api-developers.dev.koop.appl.services/devportal/apis/{API_ID}/overview
+
+apicurio:
+  api_url: http://apicurio:8095/apis/registry/v2
+  default_api_group: api
+
+max_threads: 1
\ No newline at end of file