The OutSystems architecture is the pivotal element that establishes high-performance low-code. It is a layered ecosystem that enables developers to build applications quickly that extend systems of record, transform complex internal business processes, rewrite critical core business systems, or create delightful, world-class mobile and web apps.
OutSystems has multiple deployment options, which allows you to pick the one that best suits your enterprise infrastructure and tech stack:
For the cloud-based infrastructures, OutSystems shares control of the cloud environments with customers. Visit our technical documentation for further details on the OutSystems Cloud Shared Responsibility Model.
Table of contents
ODC is a cloud-native, app development platform that enables you to address your most strategic, mission-critical needs. It provides a modular, scalable environment for developing and deploying your apps, all packaged in a modern architecture based on best practices in cloud-native infrastructure, management, and operations. Four main characteristics separate it from run-of-the-mill low-code platforms:
The development platform consists of multiple services, each responsible for specific functions that facilitate the building and deployment of apps. All the platform services have a resilient microservices design with secure web service interfaces. Developers, DevOps engineers, and architects interact with these services using ODC Studio and the ODC Portal. They are all also multi-tenant and benefit from automatic recovery and continuous upgrades. With ODC, applications are always on, highly available, and utilize a global content delivery network (CDN) to deliver application content anywhere in the world with reduced latency.
The infrastructure that hosts ODC is running in multiple availability zones (AZs) to provide a higher level of resiliency for customer applications, even in non-production stages. Load balancing is done via an API Gateway, and traffic routing to healthy instances is automatic. The runtime also has built-in application health monitoring and will seamlessly launch new instances of the application as needed to replace any unhealthy ones
Using Aurora Serverless V2, the data in the database is automatically written to three AZs simultaneously. The data is also backed up continuously and incrementally, which allows for data to be restored at any point in time within the backup retention period.
In OutSystems Developer Cloud, the runtime is independent of the Platform and comprises multiple stages, each independent of the other, that serve to host and run the deployed apps. Staging lets multiple teams deliver independently and in parallel, a foundational part of the continuous integration approach to software development.
Using containers, ODC automatically provides scaling without any setup or configuration necessary. Additional instances of an application will be deployed to handle increased load with traffic automatically being load balanced based on availability. Automatic scaling is not just limited to application compute. ODC databases also automatically scale up and down based on load.
OutSystems gives organizations the freedom to deploy their applications on an infrastructure that is physically distributed around the globe. When subscribing to OutSystems, organizations choose the region(s) they will be using and the following regions are available for ODC:
Whenever possible, organizations should consider locating their OutSystems instance in a region that reduces distance (and latency) to optimize application performance and data transfers. Additionally, to meet legal requirements, organizations can select the regions to ensure that specific data resides in a specific region.
OutSystems 11 Cloud (OutSystems Cloud) is a public cloud with its physical infrastructure hosted in Amazon Web Services (AWS) data centers. Each customer has a dedicated set of virtual machines and database instances protected inside a dedicated Virtual Private Cloud (VPC), which is logically isolated from the internet and other virtual networks on AWS.
OutSystems Cloud uses a layer of AWS Security Groups, acting as firewalls, to control the traffic allowed between the customer environments and the internet. Additionally, OutSystems shields each environment using a Web Application Firewall (WAF), which blocks malicious traffic from reaching the running web applications. To ensure that OutSystems keeps full flexibility on the reaction to evolving security threats, maximum availability, and compatibility with OutSystems product evolution, the same WAF's policies apply to all customers.
The OutSystems Cloud high-availability option enables customers to deploy front-end servers across different AWS Availability Zones and set up a database replica in a different Availability Zone than the primary database.
Additionally, customers who need extra layers of compliance have the option to upgrade to a high-compliance OutSystems Cloud, which reinforces security, risk management, and monitoring for a SOC2 Type II compliant cloud platform. From an infrastructure perspective, this option adds:
The diagram below shows the architecture of the base setup for a Standard Edition with high-availability option in a high-compliance OutSystems Cloud:
When subscribing to OutSystems Cloud, OutSystems will provision, install, and configure an OutSystems infrastructure in the cloud, with the number and type of environments the customer selects.
OutSystems allocates dedicated infrastructure for each customer: virtual servers, storage, networking, operating systems, databases, and OutSystems software.
The OutSystems infrastructure is deployed on the stack selected by the customer, according to the following available combinations:
| Operating System | Database |
|---|---|
Windows Server 2022 | MS SQL Server 2022 Standard Edition |
Oracle 19c Standard Edition |
The OutSystems infrastructure is deployed in the Region selected by the customer, among the following options:
Optionally, customers can explicitly request encryption of data-at-rest in the production database. When encryption of data-at-rest is activated, database backups are also encrypted.
When a customer upgrades its subscription to OutSystems Sentry, OutSystems will make the necessary infrastructure upgrades.
The OutSystems PaaS cloud-ready (OutSystems Cloud) and IaaS self-managed (OutSystems 11) deployment options share a platform architecture. This platform architecture provides components, tools, environments, code generation and more to build apps that are extensible and can run in a standard .NET application server. OutSystems doesn't lock customers into any proprietary technology.
Our platform has environments, tools and components that cover the full application lifecycle management process and the different development tools are the following:
The OutSystems management consoles are:
The OutSystems platform does not use any runtime engines or proprietary interpreters to run your applications:
What happens to apps developed in OutSystems if the vendor and platforms change? For worry-free and risk-free implementation, OutSystems is the only solution that truly offers "no vendor lock-in”. OutSystems doesn't use a proprietary runtime engine to run applications. Instead, the OutSystems platform takes your application models and generates standard .NET applications that are ready to run on a standard web application server that ultimately does not require OutSystems to run.
Therefore, if you ever decide to stop using the OutSystems platform, you can detach the source code of your applications. You can then manage them as any other .NET application and use the IDEs and version control systems of your choice. You are not locked in to OutSystems if you have to change your tools. This provides customers the assurance that, if they ever stop using OutSystems, their IP is not lost, and applications will continue to run as-is in their own environment.
