Amazon Virtual Private Cloud (VPC) VPC Overview Personal datacenter in the cloud, hosted by Amazon AWS Every account in the AWS gets default VPC Each instance (virtual machine) that you create gets its default VPC VPN connections can be made to the VPC Subnets can be created in the VPC Public subnets Private subnets Multiple VPC can be interconnected through VPC peering The old term of the “endpoints” means laptop or server device but in Read more…
Selecting the storage service Simple Storage Service (S3): One of the first storage that Amazon offers. It is object-level storage. Glacier: It is used to archive data. Data that you need to retrieve average in 3 to 5 hours. CloudFront: Bringing the data close to your location especially web data for a faster cache. Elastic Block Store (EBS): It is used with instances for fast level access because it stores data in block-level not object Read more…
This image shows Shared responsibility in Azure
Application Programming Interface (API) We often interact with the software or application by clicking drag and drop. We humans, interact with a user interface (UI) where we interact with buttons, arrows, and pictures. But programs don’t understand UI. They required code to work. The main purpose of the API is to interact one program with another program using code. API Management It is the process of designing, publishing, documenting, and analyzing APIs in a secure Read more…
A load balancer is a way to have multiple servers perform the same operations. The main purpose of this device/software is to make sure to avoid the burden on a single application by districting workloads. Many new webservers deal with thousands if not millions of users and return the correct text, image, or video, all in a fast and reliable manner. Load balancing categories Sender initiated – it is where sends locates the best target Read more…
NoSQL Not based on SQL or relational design theory Design supports for fast transactions Relational Databases (RDB) RDB terminology Rows – tuples Columns – attributes/properties Tables – relations/entities/objects Views and results Relationship Primary key – Key in the current table. Each table has a unique primary key. Foreign key – ID in the other table that we may use in our query to bring the table together. Join – we can join tables together by Read more…
Azure IoT Hub It is a managed service for bi-directional communication. Also, it’s a PaaS which means building solutions from scratch. Azure IoT Central It’s an IoT platform that provides SaaS which means users don’t require deep technical knowledge. Provides service for connecting, management, and monitoring IoT devices. Azure Sphere It’s an ecosystem based on the certified chip (microcontroller units – MCUs) Sphere OS (Linux) Security service. It provides secure end-to-end IoT solutions. Azure Synapse Read more…
DNS name is a human-friendly name of a website that resolves an IP address with a domain name. When you type a domain name in a search bar such as example.com it resolves with the number known as IP address. You may say it’s like your phone book where you save your contact name with their phone number. DNS uses port 53 for both TCP and UDP. It uses UDP for Zone transfer and TCP Read more…