# Klaviyo Tech Stack

Klaviyo uses 38 tools and technologies to build, market, and sell its products.

Source: https://himalayas.app/companies/klaviyo/tech-stack

## Languages & Frameworks

| Technology | What it is |
| --- | --- |
| Django | The Web framework for perfectionists with deadlines |
| Ruby on Rails | Web development that doesn't hurt |
| JavaScript | Lightweight, interpreted, object-oriented language with first-class functions |
| Python | A clear and powerful object-oriented programming language, comparable to Perl, Ruby, Scheme, or Java. |
| HTML5 | 5th major revision of the core language of the World Wide Web |
| CSS 3 | The latest evolution of the Cascading Style Sheets language |
| Ruby | A dynamic, interpreted, open source programming language with a focus on simplicity and productivity |
| Go | An open source programming language that makes it easy to build simple, reliable, and efficient software |
| Linux | A family of free and open source software operating systems based on the Linux kernel |

## Development

| Technology | What it is |
| --- | --- |
| Apache Aurora | An Apcahe Mesos framework for scheduling jobs, originally developed by Twitter |
| Terraform | Describe your complete infrastructure as code and build resources across providers |
| Ansible | Radically simple configuration-management, application deployment, task-execution, and multi-node orch... |
| Packer | Packer is a free and open source tool for creating golden images for multiple platforms from a single source configuration. |

## Libraries

| Technology | What it is |
| --- | --- |
| NumPy | Fundamental package for scientific computing with Python |
| Pandas | High-performance, easy-to-use data structures and data analysis tools for the Python programming language |
| React | A JavaScript library for building user interfaces |
| jQuery | The Write Less, Do More, JavaScript Library. |
| jQuery UI | Curated set of user interface interactions, effects, widgets, and themes built on top of the jQuery Ja... |

## Application Hosting

| Technology | What it is |
| --- | --- |
| AWS Batch | Fully Managed Batch Processing at Any Scale |
| Amazon Web Services (AWS) | Amazon Web Services is a subsidiary of Amazon providing on-demand cloud computing platforms and APIs to individuals, companies, and governments, on a metered pay-as-you-go basis. |

## Data Stores

| Technology | What it is |
| --- | --- |
| Apache Flink | Fast and reliable large-scale data processing engine |
| MySQL | The world's most popular open source database |
| PostgreSQL | A powerful, open source object-relational database system |
| Cassandra | A partitioned row store. Rows are organized into tables with a required primary key. |
| Redis | An in-memory database that persists on disk |
| Kafka | Distributed, fault tolerant, high throughput pub-sub messaging system |
| RabbitMQ | Open source multiprotocol messaging broker |

## Application Utilities

| Technology | What it is |
| --- | --- |
| Okta | Enterprise-grade identity management for all your apps, users & devices |
| FullStory | Meet FullStory, the app that captures all your customer experience data in one powerful, easy-to-use p... |
| Amazon SageMaker | Amazon SageMaker helps data scientists and developers to prepare, build, train, and deploy high-quality machine learning (ML) models quickly by bringing together a broad set of capabilities purpose-built for ML. |

## Analytics

| Technology | What it is |
| --- | --- |
| Google Tag Manager | Quickly and easily update tags and code snippets on your website or mobile app |
| Segment | A single hub to collect, translate and send your data with the flip of a switch. |
| Heap | Automatically capture every user action in your app and measure it all |
| Google Analytics | Enterprise-class web analytics. |

## Assets and Media

| Technology | What it is |
| --- | --- |
| Fastly | We're redefining content delivery. |

## Design

| Technology | What it is |
| --- | --- |
| Adobe Fonts | An online service offering high-quality fonts |

## Collaboration

| Technology | What it is |
| --- | --- |
| Zoom | Video Conferencing, Web Conferencing, Webinars, Screen Sharing |

## Marketing and Sales Tools

| Technology | What it is |
| --- | --- |
| 6sense | Identify accounts looking for your solution. Prioritize efforts. Engage the right way. Measure what matters. |

## Company profile

[Klaviyo](https://himalayas.app/companies/klaviyo.md)