AWS Certified Solutions Architect Associate All-in-One Exam Guide, Second Edition (Exam SAA-C02), 2nd Edition
When you study the chapters, you will find that AWS has a shared responsibility model; this means AWS is responsible for the security of the cloud, and the customer is responsible for the security in the cloud (link)
Vikram: [Shared responsibility model]
S3 is going to do the partitioning based on the key prefix. (link)
Amazon S3 does not support object locking (link)
updates to a single key are atomic. (link)
This provides read-after-write consistency. (link)
The S3 service is intended to be a “write once, read many” use case (link)
The name of the bucket must be unique, which means you cannot have two buckets with the same name even across multiple regions (link)
Amazon S3 can be used as your big data object store (link)
These contents can be distributed either directly from S3 or via Amazon CloudFront. (link)
cross-region replication (link)
For example, if you put a *.html file in S3, you can access it from a web browser without the need for a web server. This is a great option for getting read-only information. (link)
For S3 Standard, S3 Standard-Infrequent Access, and S3 Glacier storage classes, data is distributed in three copies for each file between multiple availability zones (AZs) within an AWS region. As a result, the data cannot be destroyed by a disaster in one AZ. S3 also provides versioning capacity; as a result, you can further protect your data against human error. (link)
Amazon S3 is designed to sustain concurrent data loss in two facilities. (link)
It is fundamentally different from other file repositories because it does not have a file system. All objects are stored in a flat namespace organized by buckets (link)
Amazon S3 is an object store and is the backbone for many other services used at Amazon (link)