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Showing posts from June, 2025

Difference between Public and Private Subnets in a VPC

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  In   cloud computing , particularly when working with services like Amazon Web Services (AWS), the concept of subnets plays a critical role in designing secure and efficient network architectures. Within a Virtual Private Cloud (VPC), subnets act as segmented portions of the network that can host resources such as virtual machines, databases, and containers. These subnets are typically classified into two categories: public and private. While both serve specific purposes within a VPC, the key difference lies in their accessibility from the internet and the role they play in securing cloud infrastructure.   AWS Solutions Architect Certification Training What is a Public Subnet? A public subnet is a subnet that is accessible from the internet. Resources placed in a public subnet can send and receive traffic directly to and from the internet, provided they have the necessary permissions and configurations. This type of subnet is commonly used for resources that require ext...

Understanding Different EC2 Instance Types and Their Use Cases

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  Amazon EC2 (Elastic Compute Cloud)  offers various instance types to cater to diverse computing needs. Each instance type is optimized for workloads such as compute-intensive tasks, memory-heavy applications, storage performance, and GPU-based processing. Choosing the right instance type is essential for optimizing performance and cost efficiency. Below is a comprehensive overview of the main EC2 instance families and their ideal use cases. 1. General Purpose Instances General Purpose instances offer a balanced mix of compute, memory, and networking resources. They are ideal for applications that require a stable performance profile without specialization.  AWS Solutions Architect Certification Training T Series (e.g., t4g, t3, t3a) : Best for burstable workloads such as development environments, low-traffic web applications, small databases, and microservices. M Series (e.g., m7g, m6i, m5) : Designed for general-purpose workloads like application servers, gaming server...