diff --git a/services/blob/src/main.rs b/services/blob/src/main.rs
--- a/services/blob/src/main.rs
+++ b/services/blob/src/main.rs
@@ -1,4 +1,5 @@
 pub mod constants;
+pub mod s3;
 pub mod service;
 pub mod tools;
 
diff --git a/services/blob/src/s3.rs b/services/blob/src/s3.rs
new file mode 100644
--- /dev/null
+++ b/services/blob/src/s3.rs
@@ -0,0 +1,95 @@
+use anyhow::{anyhow, Result};
+use aws_sdk_s3::model::CompletedPart;
+use aws_sdk_s3::Client as S3Client;
+use std::sync::Arc;
+
+/// A helper structure representing an S3 object path
+#[derive(Clone, Debug)]
+pub struct S3Path {
+  pub bucket_name: String,
+  pub object_name: String,
+}
+
+impl S3Path {
+  /// Constructs an [`S3Path`] from given string
+  /// The path should be in the following format: `[bucket_name]/[object_name]`
+  pub fn from_full_path(full_path: &str) -> Result<Self> {
+    if !full_path.contains('/') {
+      return Err(anyhow!("S3 path should contain the '/' separator"));
+    }
+
+    let mut split = full_path.split('/');
+    Ok(S3Path {
+      bucket_name: split
+        .next()
+        .ok_or(anyhow!("Expected bucket name in path [{}]", full_path))?
+        .to_string(),
+      object_name: split
+        .next()
+        .ok_or(anyhow!("Expected object name in path [{}]", full_path))?
+        .to_string(),
+    })
+  }
+
+  /// Retrieves full S3 path string in the following format: `[bucket_name]/[object_name]`
+  pub fn to_full_path(&self) -> String {
+    format!("{}/{}", self.bucket_name, self.object_name)
+  }
+}
+
+/// Represents a multipart upload session to the AWS S3
+pub struct MultiPartUploadSession {
+  client: Arc<S3Client>,
+  bucket_name: String,
+  object_name: String,
+  upload_id: String,
+  upload_parts: Vec<CompletedPart>,
+}
+
+impl MultiPartUploadSession {
+  /// Starts a new upload session and returns its instance
+  pub async fn start(client: &Arc<S3Client>, s3_path: &S3Path) -> Result<Self> {
+    unimplemented!()
+  }
+
+  /// adds data part to the multipart upload
+  pub async fn add_part(&mut self, part: Vec<u8>) -> Result<()> {
+    unimplemented!()
+  }
+
+  /// finishes the upload
+  pub async fn finish_upload(&self) -> Result<()> {
+    unimplemented!()
+  }
+}
+
+#[cfg(test)]
+mod tests {
+  use super::*;
+
+  #[test]
+  fn test_s3path_from_full_path() {
+    let full_path = "my_bucket/some_object";
+    let s3_path = S3Path::from_full_path(full_path);
+    assert!(s3_path.is_ok());
+    let s3_path = s3_path.unwrap();
+    assert_eq!(&s3_path.bucket_name, "my_bucket");
+    assert_eq!(&s3_path.object_name, "some_object");
+  }
+
+  #[test]
+  fn test_s3path_from_invalid_path() {
+    let result = S3Path::from_full_path("invalid_path");
+    assert!(result.is_err())
+  }
+
+  #[test]
+  fn test_s3path_to_full_path() {
+    let s3_path = S3Path {
+      bucket_name: "my_bucket".to_string(),
+      object_name: "some_object".to_string(),
+    };
+    let full_path = s3_path.to_full_path();
+    assert_eq!(full_path, "my_bucket/some_object");
+  }
+}