AWS Well-Architected Framework
- Resilient
- Performant
- Secure
- Cost-Optimized
- Operationally-Excellent
65 Questions
~72% -> 720/1000 points
Exam Guide- White Papers
TODO AWS Well-Architected Framework
https://www.youtube.com/watch?v=Ia-UEYYR44s&ab_channel=freeCodeCamp.org
S3: Object-based storage service as opposed to file or block storage. Server-less.
S3 Object
Key - Name of the object
Value - Data itself
Version Id -
Metadata -
o Bytes to 5 Terabytes in size
S3 Bucket
Buckets hold objects and can also have folders which in turn hold objects
S3 is a universal namespace so bucket names must be unique
S3 Storage Classes
Standard(default) 99.99% Availability, 11 9's Durability, Replicated across at least three AZ's
Standard Infrequently Accessed -> Cheaper 50% less than Standard with reduced availability
One Zone IA -> 20 % cheaper with reduced durability
Glacier -> Long term cold storage. Retrieval of data can take minutes to hours but very cheap
Glacier Long term storage -> longer retrieval (12 hrs) -> more cheaper
S3 Security
All news buckets are PRIVATE when created by default
Logging per request can be turned on a bucket and saved in a different bucket
Access control is configured using Bucket Policies and Access Control Lists (Legacy feature)
S3 Encryption
Transit- Traffic between uploader and S3 is achieved via SSL
At Rest - S3 Managed Keys, SSE-
