# Understanding AWS Storage Types & Use Cases

AWS offers **various storage options** to meet different use cases, balancing **performance, scalability, durability, and cost**. SecureCart, as an e-commerce platform, needs to store and manage **product images, order transactions, logs, and customer data** efficiently using the appropriate AWS storage services.

✔ **Why does SecureCart need different AWS storage types?**

* **Scalability:** Handles growing product catalogs and customer data.
* **Performance:** Ensures fast access to frequently used data (e.g., customer sessions, inventory updates).
* **Durability:** Prevents data loss by replicating storage across multiple AWS Availability Zones (AZs).
* **Cost Optimization:** Uses tiered storage solutions for cost-effective data management.

***

### **🔹 Step 1: Overview of AWS Storage Types**

✔ **AWS Storage is categorized into three main types:**

| **Storage Type**                    | **Purpose**                                                 | **SecureCart Use Case**                                                            |
| ----------------------------------- | ----------------------------------------------------------- | ---------------------------------------------------------------------------------- |
| **Object Storage (Amazon S3)**      | Stores unstructured data such as images, backups, and logs. | **Stores product images, order receipts, and static website content.**             |
| **Block Storage (Amazon EBS)**      | Provides low-latency storage for compute workloads (EC2).   | **Stores SecureCart’s database files and transaction logs for high-speed access.** |
| **File Storage (Amazon EFS & FSx)** | Provides shared storage for multiple instances.             | **Hosts shared files for SecureCart’s microservices and application logs.**        |

✅ **Best Practices:**\
✔ **Use S3 for durable, cost-effective storage of static assets.**\
✔ **Use EBS for databases requiring low-latency access.**\
✔ **Use EFS for microservices that require shared file systems.**

***

### **🔹 Step 2: Object Storage with Amazon S3**

✔ **What is Amazon S3?**\
Amazon S3 is a **highly scalable, durable, and secure object storage service** that is ideal for **storing unstructured data like media files, logs, backups, and static content**.

✔ **Key Features of S3:**

* **99.999999999% (11 nines) durability** for data reliability.
* **Global availability with Cross-Region Replication (CRR).**
* **Lifecycle policies for automatic archiving and cost optimization.**

✔ **SecureCart’s Use Cases for Amazon S3:**

| **Feature**                | **Purpose**                                          | **SecureCart Implementation**                            |
| -------------------------- | ---------------------------------------------------- | -------------------------------------------------------- |
| **S3 Standard**            | General-purpose, high-performance storage.           | **Stores product images and static website files.**      |
| **S3 Intelligent-Tiering** | Auto-moves data between access tiers based on usage. | **Optimizes storage costs for transaction logs.**        |
| **S3 Glacier**             | Low-cost archival storage.                           | **Stores order history and compliance-related data.**    |
| **S3 Object Lock**         | Protects objects from being deleted or modified.     | **Prevents accidental deletion of transaction records.** |

✅ **Best Practices:**\
✔ **Use S3 Lifecycle Policies to move data to lower-cost tiers automatically.**\
✔ **Enable versioning to protect against accidental overwrites or deletions.**\
✔ **Encrypt all sensitive data in S3 using AWS KMS.**

***

### **🔹 Step 3: Block Storage with Amazon EBS**

✔ **What is Amazon EBS?**\
Amazon Elastic Block Store (EBS) is **low-latency, high-performance storage** designed for use with Amazon EC2 instances. It provides **persistence for compute workloads** such as databases and transaction logs.

✔ **SecureCart’s Use Cases for Amazon EBS:**

| **EBS Volume Type**                | **Purpose**                                       | **SecureCart Implementation**                              |
| ---------------------------------- | ------------------------------------------------- | ---------------------------------------------------------- |
| **gp3 (General Purpose SSD)**      | Balances cost and performance for most workloads. | **Used for SecureCart’s database and web servers.**        |
| **io2 (Provisioned IOPS SSD)**     | High-performance database storage.                | **Ensures low-latency access for checkout transactions.**  |
| **st1 (Throughput Optimized HDD)** | Optimized for sequential workloads like big data. | **Used for SecureCart’s analytics and reporting systems.** |

✅ **Best Practices:**\
✔ **Use Multi-Attach EBS for high-availability architectures.**\
✔ **Enable EBS Snapshots for backup and disaster recovery.**\
✔ **Monitor and optimize EBS IOPS to match application needs.**

***

### **🔹 Step 4: File Storage with Amazon EFS & Amazon FSx**

✔ **What is Amazon EFS & Amazon FSx?**\
Amazon EFS and FSx provide **shared file storage** for applications that require multiple compute resources to access the same data.

✔ **SecureCart’s Use Cases for File Storage:**

| **File Storage Service**             | **Purpose**                                            | **SecureCart Implementation**                                                      |
| ------------------------------------ | ------------------------------------------------------ | ---------------------------------------------------------------------------------- |
| **Amazon EFS (Elastic File System)** | Scalable, serverless file storage for Linux workloads. | **Hosts shared assets for SecureCart’s application microservices.**                |
| **Amazon FSx for Windows**           | Fully managed Windows file server.                     | **Supports SecureCart’s legacy applications that require SMB-based file sharing.** |
| **Amazon FSx for Lustre**            | High-speed parallel file system.                       | **Enhances SecureCart’s AI-based product recommendations.**                        |

✅ **Best Practices:**\
✔ **Use EFS for applications requiring shared storage across multiple EC2 instances.**\
✔ **Enable automatic backups and encryption for FSx.**\
✔ **Choose FSx for Lustre when performance-intensive workloads are required.**

***

### **🔹 Step 5: Comparing AWS Storage Services for SecureCart**

✔ **Which storage solution is right for SecureCart’s workloads?**

| **Requirement**                                         | **Recommended AWS Service** |
| ------------------------------------------------------- | --------------------------- |
| **Scalable object storage for product images and logs** | Amazon S3                   |
| **High-performance block storage for databases**        | Amazon EBS                  |
| **Shared file storage for microservices**               | Amazon EFS                  |
| **Low-cost archival storage for transaction history**   | Amazon S3 Glacier           |
| **Real-time session caching for fast access**           | Amazon ElastiCache (Redis)  |

✅ **Best Practices:**\
✔ **Use a combination of S3, EBS, and EFS based on workload needs.**\
✔ **Optimize cost by moving infrequently accessed data to archival storage (S3 Glacier).**\
✔ **Monitor storage performance using Amazon CloudWatch.**

***

## **🚀 Summary**

✔ **Use Amazon S3 for scalable, cost-effective object storage.**\
✔ **Deploy Amazon EBS for high-performance block storage, especially for databases.**\
✔ **Utilize Amazon EFS and FSx for shared file storage across applications.**\
✔ **Optimize cost and performance using storage tiering and caching.**\
✔ **Monitor storage utilization and performance using AWS monitoring tools.**

#### **Scenario:**

SecureCart must **choose the right storage types for its applications**, considering **performance, cost, and scalability**.

#### **Key Learning Objectives:**

✅ Understand **object, file, and block storage** types\
✅ Learn **when to use Amazon S3, EFS, and EBS**\
✅ Identify **appropriate storage services for different workloads**

#### **Hands-on Labs:**

1️⃣ **Deploy an S3 Bucket & Enable Versioning**\
2️⃣ **Set Up Amazon EBS for an EC2 Instance**\
3️⃣ **Create an Amazon EFS File System for Shared Storage**

🔹 **Outcome:** SecureCart **chooses the right AWS storage services based on workload requirements**.