diff --git a/src/identity/application/services/add_store_service.rs b/src/identity/application/services/add_store_service.rs
new file mode 100644
index 0000000..9dac6ff
--- /dev/null
+++ b/src/identity/application/services/add_store_service.rs
@@ -0,0 +1,152 @@
+// SPDX-FileCopyrightText: 2024 Aravinth Manivannan <realaravinth@batsense.net>
+//
+// SPDX-License-Identifier: AGPL-3.0-or-later
+
+use std::sync::Arc;
+
+use derive_builder::Builder;
+use mockall::predicate::*;
+use mockall::*;
+
+use super::errors::*;
+use crate::identity::{
+    application::port::output::db::{store_id_exists::*, store_name_exists::*},
+    domain::{
+        add_store_command::*,
+        store_added_event::{StoreAddedEvent, StoreAddedEventBuilder},
+        store_aggregate::*,
+    },
+};
+
+#[automock]
+#[async_trait::async_trait]
+pub trait AddStoreUseCase: Send + Sync {
+    async fn add_store(&self, cmd: AddStoreCommand) -> IdentityResult<StoreAddedEvent>;
+}
+
+pub type AddStoreServiceObj = Arc<dyn AddStoreUseCase>;
+
+#[derive(Clone, Builder)]
+pub struct AddStoreService {
+    db_store_id_exists: StoreIDExistsDBPortObj,
+    db_store_name_exists: StoreNameExistsDBPortObj,
+}
+
+#[async_trait::async_trait]
+impl AddStoreUseCase for AddStoreService {
+    async fn add_store(&self, cmd: AddStoreCommand) -> IdentityResult<StoreAddedEvent> {
+        if self
+            .db_store_id_exists
+            .store_id_exists(cmd.store_id())
+            .await?
+        {
+            return Err(IdentityError::DuplicateStoreID);
+        }
+
+        let store = StoreBuilder::default()
+            .name(cmd.name().into())
+            .address(cmd.address().as_ref().map(|s| s.to_string()))
+            .owner(*cmd.owner())
+            .store_id(*cmd.store_id())
+            .build()
+            .unwrap();
+
+        if self.db_store_name_exists.store_name_exists(&store).await? {
+            return Err(IdentityError::DuplicateStoreName);
+        }
+
+        Ok(StoreAddedEventBuilder::default()
+            .name(store.name().into())
+            .address(store.address().as_ref().map(|s| s.to_string()))
+            .owner(*cmd.owner())
+            .store_id(*cmd.store_id())
+            .build()
+            .unwrap())
+    }
+}
+
+#[cfg(test)]
+pub mod tests {
+    use super::*;
+
+    use crate::tests::bdd::*;
+    use crate::utils::uuid::tests::*;
+
+    pub fn mock_add_store_service(
+        times: Option<usize>,
+        cmd: AddStoreCommand,
+    ) -> AddStoreServiceObj {
+        let mut m = MockAddStoreUseCase::new();
+
+        let res = StoreAddedEventBuilder::default()
+            .name(cmd.name().into())
+            .address(cmd.address().as_ref().map(|s| s.to_string()))
+            .owner(*cmd.owner())
+            .store_id(*cmd.store_id())
+            .build()
+            .unwrap();
+
+        if let Some(times) = times {
+            m.expect_add_store()
+                .times(times)
+                .returning(move |_| Ok(res.clone()));
+        } else {
+            m.expect_add_store().returning(move |_| Ok(res.clone()));
+        }
+
+        Arc::new(m)
+    }
+
+    #[actix_rt::test]
+    async fn test_service_store_id_doesnt_exist() {
+        let name = "foo";
+        let address = "bar";
+        let owner = UUID;
+
+        let cmd = AddStoreCommandBuilder::default()
+            .name(name.into())
+            .address(Some(address.into()))
+            .owner(owner)
+            .store_id(UUID)
+            .build()
+            .unwrap();
+
+        let s = AddStoreServiceBuilder::default()
+            .db_store_id_exists(mock_store_id_exists_db_port_false(IS_CALLED_ONLY_ONCE))
+            .db_store_name_exists(mock_store_name_exists_db_port_false(IS_CALLED_ONLY_ONCE))
+            .build()
+            .unwrap();
+
+        let res = s.add_store(cmd.clone()).await.unwrap();
+        assert_eq!(res.name(), cmd.name());
+        assert_eq!(res.address(), cmd.address());
+        assert_eq!(res.owner(), cmd.owner());
+        assert_eq!(res.store_id(), cmd.store_id());
+    }
+
+    #[actix_rt::test]
+    async fn test_service_store_name_exists() {
+        let name = "foo";
+        let address = "bar";
+        let owner = UUID;
+
+        let cmd = AddStoreCommandBuilder::default()
+            .name(name.into())
+            .address(Some(address.into()))
+            .owner(owner)
+            .store_id(UUID)
+            .build()
+            .unwrap();
+
+        let s = AddStoreServiceBuilder::default()
+            .db_store_id_exists(mock_store_id_exists_db_port_false(IS_CALLED_ONLY_ONCE))
+            .db_store_name_exists(mock_store_name_exists_db_port_true(IS_CALLED_ONLY_ONCE))
+            .build()
+            .unwrap();
+
+        assert_eq!(
+            s.add_store(cmd.clone()).await,
+            Err(IdentityError::DuplicateStoreName)
+        );
+    }
+}
diff --git a/src/identity/application/services/update_store_service.rs b/src/identity/application/services/update_store_service.rs
new file mode 100644
index 0000000..6e3c609
--- /dev/null
+++ b/src/identity/application/services/update_store_service.rs
@@ -0,0 +1,146 @@
+// SPDX-FileCopyrightText: 2024 Aravinth Manivannan <realaravinth@batsense.net>
+//
+// SPDX-License-Identifier: AGPL-3.0-or-later
+
+use std::sync::Arc;
+
+use derive_builder::Builder;
+use mockall::predicate::*;
+use mockall::*;
+
+use super::errors::*;
+use crate::identity::{
+    application::port::output::db::{store_id_exists::*, store_name_exists::*},
+    domain::{
+        store_aggregate::*, store_updated_event::*, update_store_command::UpdateStoreCommand,
+    },
+};
+use crate::utils::uuid::*;
+
+#[automock]
+#[async_trait::async_trait]
+pub trait UpdateStoreUseCase: Send + Sync {
+    async fn update_store(&self, cmd: UpdateStoreCommand) -> IdentityResult<StoreUpdatedEvent>;
+}
+
+pub type UpdateStoreServiceObj = Arc<dyn UpdateStoreUseCase>;
+
+#[derive(Clone, Builder)]
+pub struct UpdateStoreService {
+    db_store_id_exists: StoreIDExistsDBPortObj,
+    db_store_name_exists: StoreNameExistsDBPortObj,
+}
+
+#[async_trait::async_trait]
+impl UpdateStoreUseCase for UpdateStoreService {
+    async fn update_store(&self, cmd: UpdateStoreCommand) -> IdentityResult<StoreUpdatedEvent> {
+        if !self
+            .db_store_id_exists
+            .store_id_exists(cmd.old_store().store_id())
+            .await?
+        {
+            return Err(IdentityError::StoreIDNotFound);
+        }
+
+        let store = StoreBuilder::default()
+            .name(cmd.name().into())
+            .address(cmd.address().as_ref().map(|s| s.to_string()))
+            .owner(*cmd.owner())
+            .store_id(*cmd.old_store().store_id())
+            .build()
+            .unwrap();
+
+        if cmd.name() != cmd.old_store().name() {
+            if self.db_store_name_exists.store_name_exists(&store).await? {
+                return Err(IdentityError::DuplicateStoreName);
+            }
+        }
+
+        Ok(StoreUpdatedEventBuilder::default()
+            .added_by_user(*cmd.adding_by())
+            .new_store(store)
+            .old_store(cmd.old_store().clone())
+            .build()
+            .unwrap())
+    }
+}
+
+#[cfg(test)]
+pub mod tests {
+    use super::*;
+
+    use crate::identity::domain::store_updated_event::tests::get_store_updated_event_from_command;
+    use crate::identity::domain::update_store_command::tests::get_update_store_cmd;
+    use crate::tests::bdd::*;
+    use crate::utils::uuid::tests::*;
+
+    pub fn mock_update_store_service(
+        times: Option<usize>,
+        cmd: UpdateStoreCommand,
+    ) -> UpdateStoreServiceObj {
+        let mut m = MockUpdateStoreUseCase::new();
+
+        let res = get_store_updated_event_from_command(&cmd);
+
+        if let Some(times) = times {
+            m.expect_update_store()
+                .times(times)
+                .returning(move |_| Ok(res.clone()));
+        } else {
+            m.expect_update_store().returning(move |_| Ok(res.clone()));
+        }
+
+        Arc::new(m)
+    }
+
+    #[actix_rt::test]
+    async fn test_service() {
+        let cmd = get_update_store_cmd();
+
+        let s = UpdateStoreServiceBuilder::default()
+            .db_store_id_exists(mock_store_id_exists_db_port_true(IS_CALLED_ONLY_ONCE))
+            .db_store_name_exists(mock_store_name_exists_db_port_false(IS_CALLED_ONLY_ONCE))
+            .build()
+            .unwrap();
+
+        let res = s.update_store(cmd.clone()).await.unwrap();
+        assert_eq!(res.new_store().name(), cmd.name());
+        assert_eq!(res.new_store().address(), cmd.address());
+        assert_eq!(res.new_store().owner(), cmd.owner());
+        assert_eq!(res.new_store().store_id(), cmd.old_store().store_id());
+        assert_eq!(res.old_store(), cmd.old_store());
+        assert_eq!(res.added_by_user(), cmd.adding_by());
+    }
+
+    #[actix_rt::test]
+    async fn test_service_store_name_exists() {
+        let cmd = get_update_store_cmd();
+
+        let s = UpdateStoreServiceBuilder::default()
+            .db_store_id_exists(mock_store_id_exists_db_port_true(IS_CALLED_ONLY_ONCE))
+            .db_store_name_exists(mock_store_name_exists_db_port_true(IS_CALLED_ONLY_ONCE))
+            .build()
+            .unwrap();
+
+        assert_eq!(
+            s.update_store(cmd.clone()).await,
+            Err(IdentityError::DuplicateStoreName)
+        );
+    }
+
+    #[actix_rt::test]
+    async fn test_service_store_id_doesnt_exist() {
+        let cmd = get_update_store_cmd();
+
+        let s = UpdateStoreServiceBuilder::default()
+            .db_store_id_exists(mock_store_id_exists_db_port_false(IS_CALLED_ONLY_ONCE))
+            .db_store_name_exists(mock_store_name_exists_db_port_false(IS_NEVER_CALLED))
+            .build()
+            .unwrap();
+
+        assert_eq!(
+            s.update_store(cmd.clone()).await,
+            Err(IdentityError::StoreIDNotFound)
+        );
+    }
+}