AWS Cloud Infrastructure

AWS cloud computing services with automatic scalability and cost optimization

We design AWS Cloud infrastructure that holds up as your application grows, with a bill you can understand. We use AWS when it adds real value and apply AWS cost optimization so you only pay for what you need.

Why AWS?

The cloud architecture used by Netflix, Airbnb and the Endesa League (yes, we also built it)

Amazon Web Services is the world's most widely used cloud computing services platform: 99.99% high availability, regions all over the planet and more than 200 services.

The problem is that many companies use it badly: oversized cloud architectures, services they don't need and bills nobody can explain.

We deploy real applications in production. We know which services you need and which to avoid, and we set up automatic scaling without driving up the bill, as we did for the ACB with thousands of users.

Main Advantages of AWS

AWS can be your best friend or your worst nightmare. The difference lies in how you design your cloud architecture. These are the real advantages when you work with a team that knows what it's doing.

Real, Not Theoretical Scalability

When the Liga Endesa app experiences a traffic spike during a Real Madrid game, the infrastructure automatically scales in seconds. No manual intervention, no downtime, no surprises. This isn't magic: it's well-configured AWS Cloud infrastructure. Auto Scaling Groups with EC2, Load Balancers, and a cloud architecture designed from day one to grow with you. And when the game ends, the infrastructure scales down and you stop paying.
Predictable and Optimized Costs

The dreaded moment for many businesses is opening their AWS bill at the end of the month. We implement AWS cost optimization with budget alerts, reserved instances where it makes sense, lifecycle policies in S3, and regular reviews. The result: you know exactly what you're going to pay, and that number is the lowest possible for your needs.
Enterprise-Level Security

AWS provides cloud security certifications your company could never achieve on its own: ISO 27001, SOC 2, GDPR, PCI DSS. But certifications are useless if the configuration is incorrect. We implement IAM with least privilege, VPCs with private subnets, encryption in transit and at rest, and regular audits. Your application is compliant because it's configured to be compliant.
Global Availability

Do you have users in Europe and Latin America? CloudFront distributes your static content from the edge closest to each user. Need to comply with data residency regulations? We deploy in the region you need. Do you want high availability with geographic redundancy? We configure replicas in multiple Availability Zones. AWS has a presence in 32 regions worldwide, and we know how to leverage it.
Unified Development and Production

No more "it works on my machine." With our AWS Cloud infrastructure, development, staging, and production environments are identical. Infrastructure as code with Terraform, automated deployments, and instant rollbacks if something goes wrong. This means fewer bugs in production, more frequent deployments, and development teams that aren't afraid to push changes.
One Partner, Not Two Suppliers

Most companies hire one agency to develop their application and another for cloud computing services. The result: when something goes wrong, they blame each other. With Mecexis, you have development and infrastructure under one roof. We build the application and deploy it. If there's a performance issue, we know whether it's code or configuration, and we fix it. No excuses, no ticket-based back-and-forth.

The Infrastructure Each Project Calls For

Working with AWS doesn't mean using it for everything.

AWS is one of our usual providers, but not the only one. Every project starts from what it needs and what it can cost, and that's how we decide where to deploy it: AWS, Hetzner or whichever provider fits best.

On AWS we go for its managed services whenever they fit: databases, queues or authentication maintained by the provider itself, with fewer pieces to manage. If the data is clinical or personal, it's hosted in Europe, whatever the provider.

Ideal use cases

AWS is the solution when you need to go further

Applications with unpredictable traffic spikes that require automatic scalability
Platforms that process real-time data with Lambda (streaming, IoT, analytics)
Startups that need rapid cloud migration without hiring an infrastructure team
E-commerce with high availability on key dates (Black Friday, sales)
Mobile applications with authentication, notifications, and S3 storage
Companies that need to comply with cloud security or data residency regulations

AWS services that we master at Mecexis

AWS has over 200 cloud computing services, but the reality is that 90% of applications only need 10. These are the ones we master to build your cloud architecture.

Amazon S3: Scalable and unlimited cloud storage

The world's most widely used object storage service. We use Amazon S3 to store everything from user files and application assets to automated backups and data lakes. We've configured lifecycle policies that automatically move legacy data to S3 Glacier, achieving AWS cost optimizations of up to 90%. We also implement object versioning for fault tolerance, server-side encryption for regulatory compliance, and pre-signed URLs for secure access from mobile and web applications.
AWS Lambda and API Gateway: serverless architectures with automatic scalability

AWS Lambda runs code without the need to provision servers: you only pay for actual compute time. We combine it with Amazon API Gateway to create auto-scalable REST and WebSocket APIs. Typical use cases include image processing on uploads to S3, payment gateway webhooks, scheduled tasks, third-party integrations, and lightweight backends for mobile applications. Serverless when it makes sense, not as a dogma.
Amazon RDS, Aurora, and DynamoDB: High-availability cloud databases

For relational data, Amazon RDS and Amazon Aurora eliminate manual management: automatic backups, read replicas, instant failover, and zero-downtime security patches. Aurora PostgreSQL offers high availability and up to 5 times better performance than standard PostgreSQL, ideal for high-traffic Django applications. For use cases requiring massive automatic scalability and low latency, Amazon DynamoDB provides a NoSQL database that responds in milliseconds at any scale, perfect for user sessions, shopping carts, and real-time data.
Amazon EC2 and AWS Fargate: Flexible cloud computing

Amazon EC2 remains the backbone of our AWS Cloud infrastructure: virtual instances with complete control over operating system and configuration. For containerized applications, AWS Fargate runs Docker containers without server management, combining the flexibility of containers with the simplicity of serverless. We use Amazon ECS to orchestrate deployments, with automatic scalability that responds to real-time demand and Spot Instances for AWS cost optimization of up to 90%.
Amazon CloudFront: High-Performance Global CDN

Amazon CloudFront distributes static and dynamic content from over 400 points of presence worldwide. Images, videos, JavaScript, and CSS files are served from the edge closest to the user, reducing latency and transfer costs. It offers native integration with S3 and EC2, free SSL certificates, and DDoS protection for cloud security. For applications with international users, CloudFront makes the difference between a website that flies and one that frustrates.
Amazon Cognito: Authentication and User Management

Amazon Cognito solves one of the most complex development challenges: secure authentication. Registration, login, password recovery, email verification, social authentication (Google, Apple, Facebook), and MFA are all ready to use. We integrate it with Django and Flutter to provide your users with a seamless experience on both web and mobile. It's GDPR compliant, manages millions of users with high availability, and ensures cloud security without storing passwords on your own infrastructure.
Amazon SQS and SNS: Messaging and Notifications

Amazon SQS (Simple Queue Service) decouples components of your cloud architecture using message queues: it processes orders, sends emails, generates reports—all asynchronously and without losing any messages, even if the receiving system is temporarily down. Amazon SNS manages push notifications to mobile devices, bulk emails, and SMS alerts. Event-driven architectures with automatic scalability process millions of messages daily.
Amazon CloudWatch: Monitoring and Alerts

You can't improve what you don't measure. Amazon CloudWatch collects metrics, logs, and events from your entire AWS Cloud infrastructure in one place. We configure custom dashboards to visualize your application's health in real time, automatic alerts when something deviates from the norm, and centralized logs for debugging. Integration with PagerDuty, Slack, or email ensures high availability.
Route 53 and AWS Certificate Manager: DNS and SSL

Amazon Route 53 manages DNS with automatic health checks, intelligent failover between regions, and latency-based routing to direct users to the nearest server. AWS Certificate Manager provides free, automatically renewed SSL/TLS certificates. Set it up and forget it: your domain will always point where it should, always with HTTPS, and always with high availability.

We're not an infrastructure consultancy that outsources development. We're developers who have learned about infrastructure because it's impossible to build good applications without understanding where they'll run. This perspective changes everything: we don't design pretty architectures in a diagram, we design architectures that work for the actual code we're going to deploy.

AWS for everything? Not necessarily. The cloud is a tool, not an end in itself. If your application doesn't need automatic scalability to millions of users, a VPS at Hetzner might be enough and save you thousands of euros a year. We'll tell you. And if you really need cloud migration to AWS, we'll use exactly the services you need, nothing more. We don't sell technology, we sell solutions.

Everything we deploy in your cloud architecture is documented in Terraform or similar. If you decide to switch providers or manage the infrastructure internally tomorrow, you have all the code. You'll never again depend on a "cloud guru" nobody understands. No vendor lock-in with us, no secrets, no artificial dependencies. The AWS Cloud infrastructure is yours, we just build it.

The ACB app we developed serves thousands of basketball fans in Spain, with massive traffic spikes during important games. It never crashes. That's not luck: it's a well-designed cloud architecture, properly configured automatic scalability with EC2 and Lambda, and a team that knows what it's doing. When we say we know how to scale, we have the metrics to prove it.