AWS EXAM Study

 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-