Which storage service is best suited to unstructured data?Cloud StorageFirestoreBigtableCloud Spanner

Cloud Storage is best suited to unstructured data.

Here's why:

1. Unstructured data refers to information that doesn't adhere to a particular data model or definition, such as text or binary data. This could include anything from text and images to video and more.

2. Google Cloud Storage is designed to handle this type of data. It's a service for storing, accessing, and managing data on Google Cloud. It's built for the high durability, availability, and scalability that modern applications require.

3. Firestore, Bigtable, and Cloud Spanner are more suited to structured or semi-structured data. They are NoSQL databases designed for different types of workloads and data models, and they require data to be structured in a certain way to work effectively.

4. Therefore, for unstructured data, Cloud Storage is the best choice among these options.