Power BI · Analysis Services · Fabric · DAX · Tabular Editor · Tuning

Optimization of Semantic Models high performance

Slow semantic models slow down the entire BI. We optimize Power BI and Analysis Services models (SSAS Tabular, Multidimensional and Azure AS), from production troubleshooting to complete redesign, focusing on DAX, VertiPaq, partitioning and reducing Fabric capacity consumption.

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Power BI · Analysis Services · Fabric · DAX · Tabular Editor · Tuning

Fast, cheap and scalable semantic models

Model Optimization

Diagnosis and refactoring of Power BI and Analysis Services models: VertiPaq, relationships, cardinality, aggregations.

DAX performance

Rewriting DAX measurements, Storage Engine vs Formula Engine, profiling with DAX Studio, Tabular Editor and SQL Profiler.

SSAS & Azure AS

Provisioning, scaling, deployment, partitioning and processing of Tabular and Multidimensional models, on-premises or in Azure AS.

Fabric cost reduction

Off-loading the semantic model for Analysis Services drastically reduces Fabric/Premium capacity consumption in visualization.

The semantic model is the heart of any Power BI project

When the semantic model is slow or poorly modeled, everything is slow: reports crash, refresh takes hours, Fabric/Premium capacity overflows, and the end user loses trust in BI. A pretty look doesn't make up for a bad model.

We cover the entire semantic model cycle

We work with Power BI semantic models (in Pro, Premium, PPU and Fabric workspaces), SQL Server Analysis Services (Tabular and Multidimensional) and Azure Analysis Services. From creating new models to production troubleshooting, including instance provisioning, scaling, partitioning, incremental processing, licensing and migration between platforms.

How we diagnose

We use VertiPaq Analyzer, DAX Studio, Tabular Editor, Best Practice Analyzer, Profiler and Extended Events to identify Storage Engine vs Formula Engine bottlenecks, high cardinality, problematic bidirectional relationships, DAX measures that materialize entire tables, and inefficient refresh patterns.

Full scope

What we deliver

Full semantic model audit (VertiPaq Analyzer, BPA)
Refactoring for star schema and relationship optimization
DAX measurement rewrite (Storage Engine vs Formula Engine)
Implementation of aggregations, calculation groups and perspectives
Table partitioning and incremental processing
Row-Level Security (RLS) and Object-Level Security (OLS)
Provisioning and configuring SQL Server Analysis Services (Tabular / Multidimensional)
Provisioning and scaling Azure Analysis Services
Model migration: Power BI ↔ SSAS ↔ Azure AS ↔ Fabric
Creation of new models: requirements, modeling, deployment
Production troubleshooting: slow queries, refresh failures, memory, time-outs
Off-loading Fabric/Power BI models for AS: capacity reduction
Microsoft acquisition and licensing (SQL Server, Power BI Premium, Fabric, M365) via CSP
Publishing, deployment pipelines and workspace management
Documentation and training of the internal team
Related services

Complementary fronts to accelerate semantic models

From modeling and DAX to processing in Analysis Services, we bring together specific services to unlock query, refresh, governance and operational cost bottlenecks.

SSAS

Consultancy for SQL Server Analysis Services Tabular and Multidimensional with a focus on performance and governance.

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Azure Analysis Services

Scale, cost, processing and integration with Power BI for more predictable AAS environments.

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Analysis Services Optimization

Engine tuning, processing, modeling and governance for SSAS and Azure Analysis Services.

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Star Schema Modeling

Semantic structuring to reduce complexity, improve compression and sustain BI growth.

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DAX Measurement Optimization

Rewriting and tuning measures to reduce bottlenecks between Formula Engine and Storage Engine.

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Report optimization

Adjustments to visuals, navigation, and model consumption for faster, clearer Power BI reports.

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ETL/ELT Performance

Review of loads and transformations to remove bottlenecks that impact refresh and semantic processing.

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Gateway and Refresh

Diagnosis of refresh, on-premises dependencies and update stability in Power BI Service.

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Process

Our way of working on projects

01

Diagnostic meeting (free)

We understand your scenario without commitment

02

Technical analysis and proposal

Complete diagnosis and personalized proposal

03

Solution development

We started developing the solution, providing constant feedback and alignment with the customer

04

Validation

We carry out validation together with the client to ensure that the data is complete, fast and consistent

05

Documentation

In this stage, we prepare complete documentation of deliverables, artifacts, pipelines and data flows

06

Delivery

We sign the acceptance form to complete the project

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Hiring Models

How we work together

Choose the model that best suits your time and needs.

Option 1

monthly support

Continuous partnership without minimum commitment.

  • No minimum stay
  • Lowest value/hour
  • Compensable time bank (up to 4 months)
  • Flexibility to scale at any time
Ideal for variable scopes
Option 2

Hours Package

Pre-contracted hours with real-time monitoring and control.

  • Balance visible in real time
  • Warning when reaching 80% of the package
  • Remaining balance valid for 12 months
  • Scope impact always reassessed
Ideal for projects with a defined scope
Option 3

Professional Allocation

Body Shop · Outsourcing

Dedicated senior as another member of your team.

  • Full-time (8h/day) or Part-time (4h/day)
  • Immediate service SLA
  • Exclusive dedication to the project
  • Hiring for weeks or months
Ideal for larger projects
Our differences

Why Power Tuning?

More than 10 years delivering data projects that really work. See what sets us apart.

Microsoft MVPs

Our team is made up of Microsoft MVPs in data: Microsoft's highest recognition for experts in the field.

Microsoft Solution Partner

We are Microsoft Solution Partner in Azure Data and AI: highly qualified team with direct access to Microsoft.

Power BI experts

Power BI Desktop, Service, Embedded, Premium and Report Server: we know each layer of the platform.

End-to-end BI

Architecture, ETL, modeling, Data Warehouse, OLAP cubes and reports. We deliver the complete project.

Performance Tuning

National reference in SQL tuning. Forget BI loads taking hours to process.

Multidisciplinary team

Azure, databases, data engineering and architecture: always the best solution for your scenario.

Real experts

Here, Júnior has no place. We solve complex problems without learning during the project.

Remote and in-person

We serve anywhere in the world remotely. In person: ES, MG, CE and SP.

Training platform

Exclusive high quality training. Customers have a special discount on all courses.

5 million views

Our consultants' technical blogs have more than 5 million views: shared knowledge.

Instant communication

Teams, WhatsApp, Telegram, Slack: no call queue. Quick response, always.

BI & Analytics

Other BI & Analytics services

Discover the other specialized services of our data team.

Data Engineering

Ingestion pipelines, Data Lakehouse, ETL/ELT and dimensional modeling from source to Data Warehouse.

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Fabric & Power BI Monitoring

Full visibility of your Power BI and Fabric environment: usage, performance, costs and auditing in real time.

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Report Design & UX

Reports with professional UX, visual identity and experience that delights the end user.

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Power Tuning Ecosystem

Discover our products

Solutions developed by our best experts to maximize your company's productivity. Guaranteed ROI.

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Talk to an expert

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Let's talk about your challenge

Are you ready to get the most out of your data environment? Our experts evaluate your scenario without obligation.

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  • Free initial diagnosis of your scenario
  • Response within 1 business day
  • No commitment, no charge for evaluation

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Speed ​​up your semantic model

Reduce reporting response time and Fabric/Premium capacity consumption.

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