Answer : 4. "Cloud Storage Services"
Explanation :

1. Google Drive, Microsoft One Drive and Dropbox are examples of cloud storage services.

2. Microsoft OneDrive is a file hosting and synchronization service provided by Microsoft. It lets users store files, and share personal data and files. It offers 5 GB of free storage space.

3. Google Drive is a file storage and synchronization service provided by Google. It allows users to store files and personal data and share files. It offers 15 GB of free storage space.

4. Cloud-Based Storage: Both OneDrive and Google Drive store files in the cloud, making it easy for users to access their files from anywhere with an Internet connection.