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AWS
AWS Cloud

🚀 Introduction to Amazon EC2 (Elastic Compute Cloud)

Amazon EC2 (Elastic Compute Cloud) is one of the most popular and foundational services in AWS. It allows you to create and manage virtual machines (instances) in the cloud with ease, scalability, and full control over the operating system, storage, and networking.

With EC2, you can run anything from small web applications to high-performance systems, all with pay-as-you-go pricing and elasticity to scale according to your needs.

🧠 Types of EC2 Instances

AWS provides a wide range of EC2 instance types, each optimized for specific workloads. Here are the main categories:

  • General Purpose
    • Examples: t3, t4g, m6i
    • Balanced CPU, memory, and networking resources. Great for web servers, small databases, and general applications.
  • Compute Optimized
    • Examples: c6a, c7g
    • Designed for CPU-intensive workloads like gaming, batch processing, API servers…
  • Memory Optimized
    • Examples: r6i, x2idn
    • Ideal for memory-heavy applications such as in-memory databases and large caches.
  • Storage Optimized
    • Examples: i4i, d3en
    • High IOPS and throughput for NoSQL databases, data warehouses, and log processing.
  • Accelerated Computing
    • Examples: p4, inf2
    • Equipped with GPUs, great for ML training, inference, and rendering tasks.

💳 EC2 Pricing Models

Amazon EC2 offers flexible pricing options to suit different use cases:

  1. On-Demand
    • Pay by the hour or second, no long-term commitments.
    • Ideal for testing or temporary workloads.
  2. Spot Instances
    • Use unused EC2 capacity at up to 90% discount off compared to On-Demand pricing.
    • Great for fault-tolerant, flexible jobs like big data or rendering.
    • Takes instances that AWS is not using but may use the instance in the future.
  3. Savings Plans
    • Commit to consistent hourly usage (EC2 or compute-based).
    • Offers flexibility and cost savings over time.
    • Long term contract that provides discount (for a 1 or 3 year term).
  4. Hosts Dedicados
    • They are quite expensive because you pay for the host (physical server). Examples of those who use them are the financial sector and governments.

💰 How Much Does EC2 Cost?

EC2 pricing varies based on:

  • Instance type (e.g., t3.micro vs r6i.8xlarge)
  • Region (São Paulo is often more expensive than N. Virginia)
  • Pricing model (on-demand, reserved, etc.)
  • Operating system (Linux is typically cheaper than Windows)

💡 To estimate costs, AWS provides the AWS Pricing Calculator. It helps you simulate:

  • Uptime hours per month
  • Instance type
  • Network traffic
  • Storage (EBS)
  • And more…

📌 Tip: A t3.micro instance is eligible for 750 free hours/month for 12 months under the AWS Free Tier.

✅ Conclusion

Amazon EC2 is a powerful, flexible, and scalable service to run your applications in the cloud. With a variety of instance types, adaptable pricing models, and deep integration with the AWS ecosystem, it’s ideal for developers, startups, and enterprises.

However, it’s crucial to understand which instance type to choose, which pricing plan to apply, and how to estimate your monthly cost to avoid billing surprises.

Always take advantage of the AWS Pricing Calculator, and if you’re just starting, explore the Free Tier to experiment at no cost.

Author

  • I am a seasoned Full Stack Software Developer with 8+ years of experience, including 6+ years specializing in Java with Spring and Quarkus. My core expertise lies in developing robust RESTful APIs integrated with Cosmos Db, MySQL, and cloud platforms like Azure and AWS. I have extensive experience designing and implementing microservices architectures, ensuring performance and reliability for high-traffic systems. In addition to backend development, I have experience with Angular to build user-friendly interfaces, leveraging my postgraduate degree in frontend web development to deliver seamless and responsive user experiences. My dedication to clean and secure code led me to present best practices to my company and clients, using tools like Sonar to ensure code quality and security. I am a critical thinker, problem solver, and team player, thriving in collaborative environments while tackling complex challenges. Beyond development, I share knowledge through my blog, NatanCode, where I write about Java, Spring, Quarkus, databases, and frontend development. My passion for learning and delivering innovative solutions drives me to excel in every project I undertake.

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