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Serverless Application Development & Event-Driven Architecture

We replace expensive, always-on servers with ultra-scalable microservices and workflows that cost nothing when idle, ensuring you only pay for value delivered.

Scale your architecture
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The challenge: the cost of "Idle Capacity"

Are you paying thousands of dollars a month for Virtual Machines that sit at 5% CPU utilization? Provisioning servers for "peak load" while they sit empty at night is not a strategy; it is a financial leak.

The "Paying for Air" syndrome

Traditional servers bill you for every second they exist, regardless of whether they are doing work. You pay for the time between requests.

Scalability bottlenecks

When Black Friday hits, a monolithic server crashes under the spike. Adding more servers takes minutes, by which time customers have left.

Integration Spaghetti

Connecting an ERP to an e-commerce platform using custom scripts on a VM creates a fragile, unmanageable mess.

Maintenance overhead

You are wasting engineering talent on patching operating systems and managing runtimes instead of building business logic.

If the answer is "we just over-provision to be safe," you are wasting budget.

The solution: Pay-Per-Execution Architecture

We build systems that sleep until they are needed. We treat your application as a set of discrete functions triggered by events, not a heavy server waiting for traffic. This shifts your operations from Rent-a-Server to Compute-on-Demand.

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Zero Idle Costs

You pay only when code runs. If no one visits your site at 3 AM, your bill for that hour is exactly $0.00.

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Infinite Scale

Whether you have one user or one million, the platform automatically spawns enough instances to handle the load and destroys them instantly after.
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Event-Driven Design

We design systems that react. A file uploaded to Blob Storage triggers a resize function; a new order in Shopify triggers a Logic App to update SAP.
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Lightweight APIs

We build robust backend APIs without managing a single web server or configuring IIS/Nginx.

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Drastic Savings

By moving background tasks to Serverless, you pay roughly $0.20 per million executions, significantly undercutting fixed infrastructure costs.

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Choose Azure Functions (Code) if

You need complex data processing, heavy calculation, or custom algorithms.
  • We write granular code (C#, Python, Node.js) that executes specific tasks with maximum performance.
  • It is the best path for heavy computation and high-performance APIs.

02

Choose Logic Apps (Low-Code) if

You need to integrate systems (System A talks to System B).
  • We use visual designers with pre-built connectors to link your ERP, CRM, and Email systems without writing "glue code."
  • It is the cleanest path for orchestration and business workflows.

The dilemma: Azure Functions vs. Logic Apps?

We don't force a coding style on you. We analyze your process to recommend the right tool.

How it works: the event loop

We build a reactive architecture that handles data in real-time.

Contact us

01

The Trigger (The Spark)

We configure Event Grid or Service Bus to listen for activity.
  • Inbound Events: A user clicks "Buy," a sensor sends a temperature reading, or a scheduled timer fires.

02

The Action (The Logic)

We implement the processing layer.
  • Processing: The Azure Function wakes up, processes the data (e.g., generates a PDF invoice), saves the result, and shuts down immediately.
  • Integration: The Logic App receives the output and routes it to the next system (e.g., sends the PDF to the customer via SendGrid).

Technology stack: modern serverless tools

We use the industry-standard Azure PaaS (Platform as a Service) toolchain.

Compute

Azure Functions for code-based microservices.

Orchestration

Azure Logic Apps for visual workflow automation.

Messaging

Azure Event Grid and Service Bus for decoupling services.

Database

Cosmos DB for serverless, low-latency data storage.

API Management

Azure APIM for securing and throttling your serverless endpoints.
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Business value: efficiency at scale

Serverless is an investment that pays dividends in agility and raw cost savings

  • Slash the bill: Eliminate "idle time" costs completely. Stop paying for servers to wait for work.
  • Time-to-Market: Developers focus purely on business logic ("ProcessOrder"), ignoring infrastructure setup ("ConfigureWebServer"), allowing features to ship days faster.
  • Resilience: The cloud provider handles the hardware. If a physical rack fails, your function simply runs somewhere else.
  • Microservices modularity: Updates are safer. You can update the "Invoice Generator" function without redeploying the entire "E-commerce" monolith.

Deliverables: your serverless assets

Deliverable

Technical specifications

Source Code Repository

Complete function code (C#/Python/TS) organized into microservices with unit tests.

Architecture Diagram

Visual map showing how events flow from Trigger -> Function -> Database.

IaC Templates

Bicep or Terraform scripts to deploy the Function Apps and Storage Accounts automatically.

API Documentation

Swagger/OpenAPI definition files describing your new serverless endpoints.

Professnet is officially certified for: ISO 27001

ISO certifications reflect our focus on delivering reliable and secure technology services.
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Tier-1 Partner

Direct collaboration with Microsoft engineers

16 Years

Experience in system design

ISO 27001

Certified information security

< 15 min

Critical incident response time (SLA)

Engagement timeline: building the factory

Week 1

Analysis & Decomposition

We review your monolithic application or manual process and identify which parts can be decoupled into microservices.

Week 2

Prototyping

We build the "Walking Skeleton"—a single event trigger connected to a dummy function to prove the architecture flows correctly.

Week 3

Implementation & Load Test

We write the core business logic, wire up the integrations (ERP/CRM), and simulate a high-load event to verify auto-scaling.

Why partner with us?

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We are Architects

We don't just write scripts; we understand distributed systems patterns (Circuit Breaker, Retry Policies) to prevent serverless chaos.

Pragmatic advice

We won't build a complex microservice mesh if a simple Web App is cheaper for your traffic level.

Cold Start mitigation

We know how to optimize Functions (using Premium Plans or Keep-Warm patterns) to ensure your users never wait.

We leave you with the code

You own the intellectual property. We hand over the Git repository and the deployment pipelines.

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What our customers say about us

Their professionalism, reliability, and commitment to each project ensure that every collaboration runs smoothly and efficiently. I wholeheartedly recommend Professnet as a solid and competent business partner.

Mariusz Duczek

Managing Director @ SCHURTER

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Thanks to their skills in system integration and technological consulting, we have significantly improved our operational processes. Projects are executed not only on time but with the utmost care.

Jarosław Sojewski

Managing Director @ FOMAR Friction

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The professionalism of the team, their quick response to our needs, and in-depth analysis have enabled us to optimize our cloud environment and enhance its security. We confidently recommend Professnet as a solid technology partner.

Maciej Kromkowski

Board Member @ Power21

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Case studies

From Local Server Room to Global Cloud

How abcgo.pl Reduced Costs by 40% and Secured Client Financial Data.

ERP System:

enova365

Technologies:

Microsoft Azure, Azure Virtual Desktop (AVD), SQL Database

Key Achievement:

40% OPEX Reduction
Read more
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Building a resilient security architecture

How KZBS secured the ecosystem of 500+ cooperative banks against modern threats.

Sector:

Banking / Public Trust

Scale:

500+ Associated Banks

Key Compliance:

NIS2, DORA, GDPR, ISO 27001
Read more

FAQ

Usually, yes, for variable workloads. However, for constant, high-intensity processing (24/7 number crunching), a dedicated server might be cheaper. We perform a cost analysis before we start.

This occurs when a function hasn't run in a while. We mitigate this by choosing the right hosting plan or using "warm-up" triggers, ensuring critical APIs respond instantly.

Yes. Using Hybrid Connections or Virtual Network Integration, Azure Functions can securely access your local data without exposing it to the public internet.

We use Application Insights. It provides a distributed trace, allowing us to see exactly where a request failed, even if it jumped across three different microservices.

Technology Partners

cisco
citrix
dell
eset
fortinet
fujitsu
hpe
huawei
jabra
lenovo
manage-engine
microsoft
oracle
palo-alto
redhat
symantec
trend-micro
vmware
xerox
cisco
citrix
dell
eset
fortinet
fujitsu
hpe
huawei
jabra
lenovo
manage-engine
microsoft
oracle
palo-alto
redhat
symantec
trend-micro
vmware
xerox
cisco
citrix
dell
eset
fortinet
fujitsu
hpe
huawei
jabra
lenovo
manage-engine
microsoft
oracle
palo-alto
redhat
symantec
trend-micro
vmware
xerox
cisco
citrix
dell
eset
fortinet
fujitsu
hpe
huawei
jabra
lenovo
manage-engine
microsoft
oracle
palo-alto
redhat
symantec
trend-micro
vmware
xerox
cisco
citrix
dell
eset
fortinet
fujitsu
hpe
huawei
jabra
lenovo
manage-engine
microsoft
oracle
palo-alto
redhat
symantec
trend-micro
vmware
xerox
cisco
citrix
dell
eset
fortinet
fujitsu
hpe
huawei
jabra
lenovo
manage-engine
microsoft
oracle
palo-alto
redhat
symantec
trend-micro
vmware
xerox

We are always happy to talk

Reach out to us about a project, consultation, or to explore other collaboration opportunities.

portrait Lukasz Tabaczek

Lukasz Tabaczek

CEO
professnet@professnet.pl
+48 516 524 227
Schedule a meeting
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Elektronowa 2d (4 floor)
03-219 Warsaw
P O L A N D
VAT ID: PL 5242 793 610

Cloud & Infrastructure:

Migration & Repatriation Azure Landing Zone Secure Connectivity Intune & Device Management

Apps, Data & AI:

App Modernization Factory Serverless & Event-Driven Azure DevOps & IaC Private RAG (GenAI)

Security & Compliance:

Managed SOC Identity & Entra ID DevSecOps (SSDLC) Security Consulting

Managed Services:

Managed Infra (24/7) Co-Managed Azure Managed Compute (VMs) Data Lifecycle & Archive

Assessments:

Azure 3D Assessment NIS2 & DORA Audit AI Readiness Check App Mod. Assessment AKS Health Check

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