Traditional server-based APIs often lead to over-provisioning, high idle costs, and operational overhead. For startups and modern products, serverless APIs offer a faster, more cost-efficient way to scale without managing infrastructure. Using FastAPI in a serverless architecture, we help teams build APIs that automatically scale with traffic, stay highly available, and reduce DevOps complexity, while still delivering strong performance and security.
Common Problems With Server-Based APIs
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Paying for idle servers during low traffic
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Complex scaling and deployment management
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Ops overhead for small engineering teams
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Slow iteration cycles
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Difficulty handling sudden traffic spikes
Our Serverless FastAPI Solution
We design serverless APIs that balance simplicity, performance, and reliability.
Why FastAPI for Serverless
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Lightweight and fast startup times
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Clear request/response schemas
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Async support for I/O-bound workloads
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Clean separation of logic for functions
Serverless Architecture Options
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FastAPI on AWS Lambda + API Gateway
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FastAPI on GCP Cloud Functions / Cloud Run
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FastAPI on Azure Functions
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Container-based serverless with auto-scaling
What We Implement (Detailed)
API Design & Deployment
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Serverless-compatible FastAPI application structure
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Function or container-based deployments
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Environment-based configuration and secrets
n- API Gateway routing and security
Performance & Cold Start Optimization
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Minimal dependency footprints
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Warm-up strategies where applicable
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Async execution for faster responses
Security & Access Control
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JWT and OAuth2 authentication
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IAM-based service permissions
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Secure secrets management
Observability & Reliability
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Centralized logging and tracing
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Error monitoring and alerts
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Retry and fallback strategies
Key Features
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Fully serverless FastAPI backends
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Auto-scaling with zero server management
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Pay-per-use cost efficiency
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Secure API gateway integration
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Cloud-native observability
Business Benefits
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Lower infrastructure and ops costs
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Automatic scaling during traffic spikes
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Faster time-to-market
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Reduced DevOps overhead
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High availability by default
Why Choose PySquad
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Experience with serverless architectures across clouds
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Deep FastAPI and cloud integration expertise
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Cost-optimized, production-ready designs
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Clear trade-offs explained upfront
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Long-term support and optimization mindset
Call to Action
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Request a Serverless API Feasibility Review
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Get a Cost Comparison (Server vs Serverless)
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Ask About Cloud-Specific Options
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Book a Technical Consultation