dimanche 10 mai 2020

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Cloudreach have been working with Amazon Web Services (AWS) for 9 years, and during this time weâ€™ve grown to over 600 people and have more than 500 AWS certs between us.

â€œPromote personal growthâ€ is one of Cloudreachâ€™s core values and as such we strongly encourage everyone in the business, from Project Managers to Sales, to take certifications and courses to improve themselves. As such, I recently took the AWS Solutions Architect Professional Exam to attempt to fill a few gaps in my AWS knowledge.

Whilst studying for the exam I found a number of useful online resources and received some valuable advice from fellow Cloudreachers that I thought might be worth sharing â€" hence writing this blog post.

What does the exam cover?

AWS Certified Solutions Architect documentation

Where the SA Associate exam gives you a basic understanding of AWS and ensures you have the prerequisite knowledge to use AWS on a daily basis, the Professional exam assumes you are architecting large enterprise scale solutions on AWS.

For the Solutions Architect Professional exam, experience delivering projects on AWS is a must. It is not possible to just memorise lots of AWS specific facts as you could for the Associate exam â€" a true, deep understanding of good practices on the platform is required.

Learning Resources

A Cloud Guru â€" no blog post about the SA Pro exam would be complete without a reference to the course from A Cloud Guru â€" it gives a high level understanding of the exam. It covers about 80% of the topics you need, to 50% of the depth you need to know â€" it misses in depth sections on Elasticache, DynamoDB, Redshift and SQS.
AWS Sample Questions â€" AWS provide 6 example questions which are useful to review once youâ€™ve covered all the base material, these questions will give you a good feel for how well you know the topics.
AWS Practice Exam â€" There is a $40 AWS practice exam (though if youâ€™ve passed any other AWS exam youâ€™ll have a voucher for a free exam in the certification portal). This practice exam is harder than the actual exam â€" many colleagues get about 10% less on this than the actual exam despite taking it the night before the real thing. The practice exam is useful to get used to how the questions are structured and how much time you have per question in the exam.
AWS re:Invent 2016: Advanced Tips for Amazon EC2 Networking and High Availability (GPST401) â€" useful for understanding networking on AWS.
AWS re:Invent 2016: Deep Dive: AWS Direct Connect and VPNs (NET402) â€" to get a true understanding of Direct Connect.
A Day in the Life of a Billion Packets (CPN401) | AWS re:Invent 2013â€" a deep dive on how VPCs and networking in AWS works.
AWS re:Invent 2016: Another Day, Another Billion Packets (NET401) â€" another deep dive on VPCs and networking in AWS.
Whiz Labs â€" Solution Architect Professional Practice tests â€" useful to target your study on the topics you donâ€™t understand and to hone your exam technique.
Linux Academy â€" covers similar topics to the A Cloud Guru course â€" but in much more depth, the material helps you to understand the topics rather than just memorise them.

Read the Security Whitepaper to understand security best practices on AWS.

Exam Tips

Topics worth reviewing for â€œeasy marksâ€:
- Elastic Beanstalk (always 2 or three questions on the exam)
- Opsworks (rarely used it in production but gets you some easy marks)
- Cloudfront (there are always 4+ questions relating to Cloudfront).
Useful Things to remember in the exam:
- For IAM â€"
  - Always pick an IAM Role to assign rights over creating multiple users (think about the scalability to hundreds or thousands of accounts)
  - Mobile app IAM â€" always use Web Federation to make your application assume a role
  - On premise use your SAML compliant LDAP/AD.
- SQS to reduce write throughput on database or decouple application services.
- Learn what IDS/IPS do and how these functionalities can be implemented in AWS.
- Think about DDOS mitigation â€" how would you reduce the attack surface area or build your own WAF?
- Datastores: understand which is the right service to use to store and access data from multiple point of view: performance, cost, availability â€" cheap doesnâ€™t necessarily mean wrong.
- Cost efficient workloads: when can SPOT instances be used to deliver a cost efficient infrastructure â€" think about EC2 Autoscaling Groups and EMR clusters.
- In the current exam â€" post-2014 AWS technologies arenâ€™t included. Bear this in mind when answering questions and revising.

start days

dimanche 10 mai 2020

aws certified solutions architect aws-senior.com

aws-senior.com

What does the exam cover?

Learning Resources

Exam Tips

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