Author: Wojciech Szczurek

AWS Certified Developer – Associate (DVA-C02)

My reference page for notes produced when studying AWS material. Well-Architected Framework Let’s start with AWS well-architected framework because in AWS everything touches that concept. The six pillars of well-architected framework includes: Cloud Design Patterns Security IAM – concept of users and policies. Policies are assigned to users. Can use existing policies or create new […]

“other side closed” – AWS Lambda with Parameters and Secrets Extension

Secrets lambda extensions is optional and AWS maintained layer that provide fast access to secrets manager or parameter store. In fact, it is just locally available http server that you can query with your favorite http client to get your app’s secrets. By default it is available on port 2773. Recently I have come across […]

Data Science – Machine Learning

Following are my personal notes that prepared me to take the AWS Certified Machine Learning – Specialty (MLS-C01) exam. Data Processing Encode Values Encoding categorical variables: (panda supports dtype="category") Encoding nominal variables: Handling Missing Values Missing values are very common. Machine learning algorithms can’t handle missing values automatically. Data with too many missing values can’t […]

Essentials – Machine Learning

Following are my personal notes that prepared me to take the AWS Certified Machine Learning – Specialty (MLS-C01) exam. Terminology and Process Effective IA Strategy The flywheel of data (positive feedback loop): more data means better analytics -> better analytics results in better products -> better products means more users -> that generates more data. […]