AWS EFS is accessed by only Lambda?

Actually, Amazon Elastic File System (EFS) is a fully managed file storage service provided by AWS, and it can be used by various AWS services, not just AWS Lambda.

Here are some common use cases and services that can utilize Amazon EFS:

1. Containerized Applications: Amazon EFS can be mounted as a shared file system in containerized applications running on Amazon ECS (Elastic Container Service) or Amazon EKS (Elastic Kubernetes Service). This allows multiple containers to access shared data stored in EFS.
2. Serverless Applications: While AWS Lambda functions can access EFS, it’s not limited to Lambda. Lambda functions can read from and write to files stored in EFS, enabling serverless applications to share data across function invocations.
3. Big Data Workloads: Amazon EFS can be used as shared storage for big data processing frameworks like Apache Spark, Apache Hadoop, and Presto running on Amazon EMR (Elastic MapReduce). It allows multiple instances in an EMR cluster to access shared data for processing.
4. Content Management Systems: Websites or applications built on content management systems (CMS) like WordPress or Drupal can benefit from shared file storage provided by Amazon EFS for media files, templates, and other content.
5. Development and Testing: EFS can serve as a centralized file storage solution for development and testing environments, allowing multiple developers or testers to access shared resources.
6. Database Backups: Amazon EFS can be used to store database backups from relational databases like MySQL, PostgreSQL, or MariaDB, providing a scalable and durable backup storage solution.

In summary, Amazon EFS is a versatile storage service that can be used by a wide range of AWS services and applications beyond just AWS Lambda. It offers scalable, shared file storage that can be accessed concurrently by multiple resources, making it suitable for various use cases in cloud-native, serverless, and traditional application architectures.