diff --git a/src/main/java/com/eventsourcing/bankAccount/commands/BankAccountCommandHandler.java b/src/main/java/com/eventsourcing/bankAccount/commands/BankAccountCommandHandler.java
index 76464a9..a9aa006 100644
--- a/src/main/java/com/eventsourcing/bankAccount/commands/BankAccountCommandHandler.java
+++ b/src/main/java/com/eventsourcing/bankAccount/commands/BankAccountCommandHandler.java
@@ -6,18 +6,19 @@ import com.eventsourcing.es.EventStoreDB;
 import lombok.RequiredArgsConstructor;
 import lombok.extern.slf4j.Slf4j;
 import org.springframework.cloud.sleuth.annotation.NewSpan;
+import org.springframework.cloud.sleuth.annotation.SpanTag;
 import org.springframework.stereotype.Service;
 
 @RequiredArgsConstructor
 @Slf4j
 @Service
-public class BankAccountCommandHandler implements BankAccountCommandService{
+public class BankAccountCommandHandler implements BankAccountCommandService {
 
     private final EventStoreDB eventStoreDB;
 
     @Override
     @NewSpan
-    public String handle(CreateBankAccountCommand command) {
+    public String handle(@SpanTag("command") CreateBankAccountCommand command) {
         final var aggregate = new BankAccountAggregate(command.aggregateID());
         aggregate.createBankAccount(command.email(), command.address(), command.userName());
         eventStoreDB.save(aggregate);
@@ -28,7 +29,7 @@ public class BankAccountCommandHandler implements BankAccountCommandService{
 
     @Override
     @NewSpan
-    public void handle(ChangeEmailCommand command) {
+    public void handle(@SpanTag("command") ChangeEmailCommand command) {
         final var aggregate = eventStoreDB.load(command.aggregateID(), BankAccountAggregate.class);
         aggregate.changeEmail(command.newEmail());
         eventStoreDB.save(aggregate);
@@ -37,7 +38,7 @@ public class BankAccountCommandHandler implements BankAccountCommandService{
 
     @Override
     @NewSpan
-    public void handle(ChangeAddressCommand command) {
+    public void handle(@SpanTag("command") ChangeAddressCommand command) {
         final var aggregate = eventStoreDB.load(command.aggregateID(), BankAccountAggregate.class);
         aggregate.changeAddress(command.newAddress());
         eventStoreDB.save(aggregate);
@@ -46,7 +47,7 @@ public class BankAccountCommandHandler implements BankAccountCommandService{
 
     @Override
     @NewSpan
-    public void handle(DepositAmountCommand command) {
+    public void handle(@SpanTag("command") DepositAmountCommand command) {
         final var aggregate = eventStoreDB.load(command.aggregateID(), BankAccountAggregate.class);
         aggregate.depositBalance(command.amount());
         eventStoreDB.save(aggregate);
diff --git a/src/main/java/com/eventsourcing/bankAccount/projection/BankAccountMongoProjection.java b/src/main/java/com/eventsourcing/bankAccount/projection/BankAccountMongoProjection.java
index 6eb4c1f..6d9c09c 100644
--- a/src/main/java/com/eventsourcing/bankAccount/projection/BankAccountMongoProjection.java
+++ b/src/main/java/com/eventsourcing/bankAccount/projection/BankAccountMongoProjection.java
@@ -16,6 +16,7 @@ import com.eventsourcing.mappers.BankAccountMapper;
 import lombok.RequiredArgsConstructor;
 import lombok.extern.slf4j.Slf4j;
 import org.springframework.cloud.sleuth.annotation.NewSpan;
+import org.springframework.cloud.sleuth.annotation.SpanTag;
 import org.springframework.kafka.annotation.KafkaListener;
 import org.springframework.kafka.listener.adapter.ConsumerRecordMetadata;
 import org.springframework.kafka.support.Acknowledgment;
@@ -56,7 +57,7 @@ public class BankAccountMongoProjection implements Projection {
     }
 
     @NewSpan
-    private void processEvents(List<Event> events) {
+    private void processEvents(@SpanTag("events") List<Event> events) {
         if (events.isEmpty()) return;
 
         try {
@@ -72,7 +73,7 @@ public class BankAccountMongoProjection implements Projection {
 
     @Override
     @NewSpan
-    public void when(Event event) {
+    public void when(@SpanTag("event") Event event) {
         final var aggregateId = event.getAggregateId();
         log.info("(when) >>>>> aggregateId: {}", aggregateId);
 
@@ -91,7 +92,7 @@ public class BankAccountMongoProjection implements Projection {
 
 
     @NewSpan
-    private void handle(BankAccountCreatedEvent event) {
+    private void handle(@SpanTag("event") BankAccountCreatedEvent event) {
         log.info("(when) BankAccountCreatedEvent: {}, aggregateID: {}", event, event.getAggregateId());
 
         final var document = BankAccountDocument.builder()
@@ -107,7 +108,7 @@ public class BankAccountMongoProjection implements Projection {
     }
 
     @NewSpan
-    private void handle(EmailChangedEvent event) {
+    private void handle(@SpanTag("event") EmailChangedEvent event) {
         log.info("(when) EmailChangedEvent: {}, aggregateID: {}", event, event.getAggregateId());
         Optional<BankAccountDocument> documentOptional = mongoRepository.findByAggregateId(event.getAggregateId());
         if (documentOptional.isEmpty())
@@ -119,7 +120,7 @@ public class BankAccountMongoProjection implements Projection {
     }
 
     @NewSpan
-    private void handle(AddressUpdatedEvent event) {
+    private void handle(@SpanTag("event") AddressUpdatedEvent event) {
         log.info("(when) AddressUpdatedEvent: {}, aggregateID: {}", event, event.getAggregateId());
         Optional<BankAccountDocument> documentOptional = mongoRepository.findByAggregateId(event.getAggregateId());
         if (documentOptional.isEmpty())
@@ -131,7 +132,7 @@ public class BankAccountMongoProjection implements Projection {
     }
 
     @NewSpan
-    private void handle(BalanceDepositedEvent event) {
+    private void handle(@SpanTag("event") BalanceDepositedEvent event) {
         log.info("(when) BalanceDepositedEvent: {}, aggregateID: {}", event, event.getAggregateId());
         Optional<BankAccountDocument> documentOptional = mongoRepository.findByAggregateId(event.getAggregateId());
         if (documentOptional.isEmpty())
diff --git a/src/main/java/com/eventsourcing/bankAccount/queries/BankAccountQueryHandler.java b/src/main/java/com/eventsourcing/bankAccount/queries/BankAccountQueryHandler.java
index 8fd1328..25f509f 100644
--- a/src/main/java/com/eventsourcing/bankAccount/queries/BankAccountQueryHandler.java
+++ b/src/main/java/com/eventsourcing/bankAccount/queries/BankAccountQueryHandler.java
@@ -9,6 +9,7 @@ import com.eventsourcing.mappers.BankAccountMapper;
 import lombok.RequiredArgsConstructor;
 import lombok.extern.slf4j.Slf4j;
 import org.springframework.cloud.sleuth.annotation.NewSpan;
+import org.springframework.cloud.sleuth.annotation.SpanTag;
 import org.springframework.stereotype.Service;
 
 import java.util.Optional;
@@ -24,7 +25,7 @@ public class BankAccountQueryHandler implements BankAccountQueryService {
 
     @Override
     @NewSpan
-    public BankAccountResponseDTO handle(GetBankAccountByIDQuery query) {
+    public BankAccountResponseDTO handle(@SpanTag("query") GetBankAccountByIDQuery query) {
         Optional<BankAccountDocument> optionalDocument = mongoRepository.findByAggregateId(query.aggregateID());
         if (optionalDocument.isPresent()) {
             return BankAccountMapper.bankAccountResponseDTOFromDocument(optionalDocument.get());
diff --git a/src/main/java/com/eventsourcing/es/EventStore.java b/src/main/java/com/eventsourcing/es/EventStore.java
index 9d9afab..bbbca34 100644
--- a/src/main/java/com/eventsourcing/es/EventStore.java
+++ b/src/main/java/com/eventsourcing/es/EventStore.java
@@ -5,6 +5,7 @@ import com.eventsourcing.es.exceptions.AggregateNotFoundException;
 import lombok.RequiredArgsConstructor;
 import lombok.extern.slf4j.Slf4j;
 import org.springframework.cloud.sleuth.annotation.NewSpan;
+import org.springframework.cloud.sleuth.annotation.SpanTag;
 import org.springframework.dao.EmptyResultDataAccessException;
 import org.springframework.jdbc.core.namedparam.NamedParameterJdbcTemplate;
 import org.springframework.stereotype.Repository;
@@ -30,7 +31,7 @@ public class EventStore implements EventStoreDB {
 
     @Override
     @NewSpan
-    public void saveEvents(List<Event> events) {
+    public void saveEvents(@SpanTag("events") List<Event> events) {
         if (events.isEmpty()) return;
 
         final List<Event> changes = new ArrayList<>(events);
@@ -49,7 +50,7 @@ public class EventStore implements EventStoreDB {
 
     @Override
     @NewSpan
-    public List<Event> loadEvents(String aggregateId, long version) {
+    public List<Event> loadEvents(@SpanTag("aggregateId") String aggregateId, @SpanTag("version") long version) {
         final List<Event> events = jdbcTemplate.query(LOAD_EVENTS_QUERY, Map.of("aggregate_id", aggregateId, "version", version),
                 (rs, rowNum) -> Event.builder()
                         .aggregateId(rs.getString("aggregate_id"))
@@ -65,7 +66,8 @@ public class EventStore implements EventStoreDB {
         return events;
     }
 
-    private <T extends AggregateRoot> void saveSnapshot(T aggregate) {
+    @NewSpan
+    private <T extends AggregateRoot> void saveSnapshot(@SpanTag("aggregate") T aggregate) {
         aggregate.toSnapshot();
         final var snapshot = EventSourcingUtils.snapshotFromAggregate(aggregate);
 
@@ -82,7 +84,7 @@ public class EventStore implements EventStoreDB {
     @Override
     @Transactional
     @NewSpan
-    public <T extends AggregateRoot> void save(T aggregate) {
+    public <T extends AggregateRoot> void save(@SpanTag("aggregate") T aggregate) {
         final List<Event> aggregateEvents = new ArrayList<>(aggregate.getChanges());
 
         if (aggregate.getVersion() > 1) {
@@ -100,7 +102,7 @@ public class EventStore implements EventStoreDB {
     }
 
     @NewSpan
-    private void handleConcurrency(String aggregateId) {
+    private void handleConcurrency(@SpanTag("aggregateId") String aggregateId) {
         try {
             String aggregateID = jdbcTemplate.queryForObject(HANDLE_CONCURRENCY_QUERY, Map.of("aggregate_id", aggregateId), String.class);
             log.info("(handleConcurrency) aggregateID for lock: {}", aggregateID);
@@ -111,7 +113,7 @@ public class EventStore implements EventStoreDB {
     }
 
     @NewSpan
-    private Optional<Snapshot> loadSnapshot(String aggregateId) {
+    private Optional<Snapshot> loadSnapshot(@SpanTag("aggregateId") String aggregateId) {
         final Optional<Snapshot> snapshot = jdbcTemplate.query(LOAD_SNAPSHOT_QUERY, Map.of("aggregate_id", aggregateId), (rs, rowNum) -> Snapshot.builder()
                 .aggregateId(rs.getString("aggregate_id"))
                 .aggregateType(rs.getString("aggregate_type"))
@@ -126,7 +128,7 @@ public class EventStore implements EventStoreDB {
     }
 
     @NewSpan
-    private <T extends AggregateRoot> T getAggregate(final String aggregateId, final Class<T> aggregateType) {
+    private <T extends AggregateRoot> T getAggregate(@SpanTag("aggregateId") final String aggregateId, @SpanTag("aggregateType") final Class<T> aggregateType) {
         try {
             return aggregateType.getConstructor(String.class).newInstance(aggregateId);
         } catch (Exception ex) {
@@ -135,7 +137,7 @@ public class EventStore implements EventStoreDB {
     }
 
     @NewSpan
-    private <T extends AggregateRoot> T getSnapshotFromClass(Optional<Snapshot> snapshot, String aggregateId, Class<T> aggregateType) {
+    private <T extends AggregateRoot> T getSnapshotFromClass(@SpanTag("snapshot") Optional<Snapshot> snapshot, @SpanTag("aggregateId") String aggregateId, @SpanTag("aggregateType") Class<T> aggregateType) {
         if (snapshot.isEmpty()) {
             final var defaultSnapshot = EventSourcingUtils.snapshotFromAggregate(getAggregate(aggregateId, aggregateType));
             return EventSourcingUtils.aggregateFromSnapshot(defaultSnapshot, aggregateType);
@@ -146,7 +148,7 @@ public class EventStore implements EventStoreDB {
     @Override
     @Transactional(readOnly = true)
     @NewSpan
-    public <T extends AggregateRoot> T load(String aggregateId, Class<T> aggregateType) {
+    public <T extends AggregateRoot> T load(@SpanTag("aggregateId") String aggregateId, @SpanTag("aggregateType") Class<T> aggregateType) {
 
         final Optional<Snapshot> snapshot = this.loadSnapshot(aggregateId);
 
@@ -166,7 +168,7 @@ public class EventStore implements EventStoreDB {
 
     @Override
     @NewSpan
-    public Boolean exists(String aggregateId) {
+    public Boolean exists(@SpanTag("aggregateId") String aggregateId) {
         try {
             final var id = jdbcTemplate.queryForObject(EXISTS_QUERY, Map.of("aggregate_id", aggregateId), String.class);
             log.info("aggregate exists id: {}", id);
diff --git a/src/main/java/com/eventsourcing/es/KafkaEventBus.java b/src/main/java/com/eventsourcing/es/KafkaEventBus.java
index 68b0ce4..9a7373d 100644
--- a/src/main/java/com/eventsourcing/es/KafkaEventBus.java
+++ b/src/main/java/com/eventsourcing/es/KafkaEventBus.java
@@ -5,6 +5,8 @@ import lombok.RequiredArgsConstructor;
 import lombok.extern.slf4j.Slf4j;
 import org.apache.kafka.clients.producer.ProducerRecord;
 import org.springframework.beans.factory.annotation.Value;
+import org.springframework.cloud.sleuth.annotation.NewSpan;
+import org.springframework.cloud.sleuth.annotation.SpanTag;
 import org.springframework.kafka.core.KafkaTemplate;
 import org.springframework.stereotype.Service;
 
@@ -21,7 +23,8 @@ public class KafkaEventBus implements EventBus {
     private String bankAccountTopicName;
 
     @Override
-    public void publish(List<Event> events) {
+    @NewSpan
+    public void publish(@SpanTag("events") List<Event> events) {
         final byte[] eventsBytes = SerializerUtils.serializeToJsonBytes(events.toArray(new Event[]{}));
         final ProducerRecord<String, byte[]> record = new ProducerRecord<>(bankAccountTopicName, eventsBytes);