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Overview of EC2 Instance Types in AWS

Posted on October 24, 2022 by

Categories: AWS

I will discuss the various EC2 instance kinds offered by AWS in this post. Elastic Compute Cloud, or EC2, is an IaaS service provided by AWS that enables users to create virtual computers in the cloud using a variety of CPU, RAM, disc, and networking configurations. Launching a new EC2 instance is straightforward because so many preset instance types are currently accessible in the AWS dashboard.

Types of EC2 Instances

When you go into the AWS interface, go to EC2 and click on Instance Types, as shown in the picture above. You can view all the many instance types that AWS offers, which you may use depending on your needs.

selection of an EC2 instance

It becomes unavoidable for an organization to employ a few services, such as EC2, S3, Lambda, and RDS, if it begins utilizing AWS as a cloud platform. This is because many programs really depend on these services to function. For EC2, Amazon provides numerous instance types tailored for various uses. Anyone just starting out with AWS may find using EC2 to be simple at first, but as time goes on and the number of users and services grows, choosing the right EC2 type becomes more critical.

Which EC2 instance type will be ideal for your workload may be determined by looking at a few different variables. You may also go to the AWS interface to learn about and comprehend the many instance types accessible. The majority of the information you need to be aware of to select the ideal instance type for an EC2 will be condensed in this post. The instance types may be roughly divided into the following five groups.

Broad Purpose

If you are just beginning your AWS experience and are unsure of the ideal instance type for your workload, you may start by selecting the general-purpose instance type. This category essentially consists of two sorts of instances: t2 and m5. These are only the kinds of situations that fall under this category. The “m” refers to micro or medium, and the “t” stands for tiny. The t2 instances are burstable instance types. Thus, you may use them as development environments or host simple applications like webpages. You can create CPU credit that can be utilized later when the resource is used; when it is not used,r  is just idle. The t2 instances are a less expensive choice within the AWS EC2 family, but you cannot use them for workloads that need more computational power or memory.

You can use the m5 instance type if you require to compute or memory that is not supplied by the t2 instance type. In addition to m5, the family includes instance types like m4 and m6.

General Purpose Instances for AWS EC2 – EC2 Instance

The m5 instance is comparable to the t2 but has more resources and capacity. According to my experience, most general-purpose AWS instances use the m5 or m5d instance types. M5 and M5D are different in that Mbecauseys aemploys its disc drive, whereas M5D uses an HDD.

Typical use case examples

  • application or web servers
  • QA and Development Environments
  • e-sports servers
  • Business Applications


The CPU-to-memory ratio is more remarkable in these situations. You can utilize this instance family for EC2 when your applications need much computing power rather than memory. The c4, c5, and c6 families include most of these cases, with c5 being the most frequent. The word “compute” is shortened here to “c.” High-performance analytical workloads, multiplayer gaming, media transcoding, and rendering, developing intricate machine learning models, scientific modeling, etc., are often run on these sorts of instances.

Compute Optimized EC2 InstancesEC2 Instances with Optimized Computing

Typical use case examples

  • processing data in batches
  • A platform for distributed analytics
  • Production and Video Coding
  • Multiple-player gaming


These instance types are designed for memory-intensive tasks, such as analyzing real-time data with Apache Spark or Presto or using in-memory databases. These instance families may also be used to operate highly efficient NoSQL databases like MongoDB and Cassandra and traditional databases like MySQL, PostgreSQL, and others. OLAP and other comparable analytical workloads, such as SQL Server Analysis Services or SAP HANA, can also be run on it. These examples are available in the r4 or r5 family.

Memory Optimized EC2 Instance Types

Optimized for Memory EC2 Instance Types

Typical use case examples

  • Caches kept in memory
  • data analytics using big
  • high-speed databases


To enable heavy I/O workloads like parallel processing or MPP data warehousing, storage-optimized EC2 instances are deployed. These instances can also be used to conduct distributed MapReduce or Hadoop workloads. The storage-optimized instances come in various categories, including d2, d3, h1, i3, and others. The official documentation will provide further information about when to employ a specific instance type. In most cases, HDD and SSD are the twoprimaryn storage devices employed. SSD should always be preferred over HDD when using database applications requiring high read and write speeds since they can quickly process writes.

Typical use case examples

  • operating MPP warehouses
  • carrying out MapReduce tasks

Enhanced Computing

This is one of the most recent members of the AWS EC2 instance family. It offers computing power for highly efficient machine learning and scientific applications that the CPU cannot handle alone. External hardware, such as a GPU, can handle specific tasks (Graphics Processing Units). These situations also use hardware accelerators or co-processors to run deep learning algorithms considerably quicker and more effectively than CPU alone.

The GPU instance type is one of the most popular ones in this group. Thanks to this, customers now have access to NVIDIA GPUs with more than 1,000 compute cores. These instances are simple for visual processing, live gaming streaming, etc. There are just a few of the following types of compute instances for families.

G4ad instances – The systems in this series of computing instances have AMD Radeon Pro V520 graphics cards or 2nd generation AMD EPYC processors. These may be used to power your graphics workstation. It includes a high-performance SSD-based storage system.

The NVIDIA Tesla GPUs used in G4dn instances are cost-effective for conducting scientific or machine-learning tasks.

Other instance types can also be utilized for accelerated computation, although the two described above are the most often employed. AWS furthermore offers a different family of instances referred to as AWS Inferential. These instances provide a high-performance and low latency-based interface, mainly litate machine learning calculations. About AWS Inferential, you can read more in the official documentation.


The numerous EC2 Instances that may be utilized with AWS have been covered in this article. Amazon provides EC2, an infrastructure service accessible in many different global areas. On EC2, you may launch your apps, which can then be made available globally. One of Amazon’s most dependable and widely accessible services is Amazon EC2, spread out through several areas worldwide.