Teo Lachev

I help organizations design, modernize, and integrate enterprise data analytics solutions using Microsoft Fabric and Power BI.

[Teo Lachev @tlachev]

Where is This Business Logic? - https://t.co/XSSOImd7V3 A current engagement calls for migrating a rather elaborate financial dashboard from Qlik to Power BI. Just when we think there is light at the end of the tunnel, another business rule is unearthed in Qlik that we need ...

[Teo Lachev @tlachev]

M365 Conference 2027 - https://t.co/W2UStaTvlN M365 ConM365 Con 27 is back. It is a free, online conference for the Microsoft community, run by community members, with ten topic days and more than 50 speakers already confirmed. Many of them are Microsoft MVPs. Day 3 is all a...

[Teo Lachev @tlachev]

Atlanta Microsoft BI Group Meeting on October 5th (Building a Medallion Architecture in Microsoft Fabric) - https://t.co/9kEpL4qlrp Atlanta BI fans, please join us in person for our next meeting on Monday, October 5th at 18:30 ET. Sivakumar (Director Digital, Data, and Analy...

[Teo Lachev @tlachev]

Open Semantic Interchange (OSI) Reloaded - https://t.co/UcHdLHXfuk My “Open Semantic Interchange (OSI)” post was an intro to the this relatively new standard. Fast forward, OSI was accepted into the Apache Incubator in June 2026 and is now known as Apache Ossie. Lo and behol...

[Teo Lachev @tlachev]

Fabric Shortcuts to Iceberg Tables - https://t.co/FMzJxgKFDR Snowflake is an increasingly popular option for data warehousing. One nice Snowflake feature is the ability to configure a table to save its data in Iceberg tables in the Snowflake own managed storage or external s...

[Teo Lachev @tlachev]

Atlanta Microsoft BI Group Meeting on September 8th (Introducing Microsoft Fabric Planning) - https://t.co/D9vWVhSdY2 Atlanta BI fans, please join us online for our next meeting on Tuesday, September 8th at 18:30 ET. Eric Hood (Center of Excellence lead for Fabric Planning -...

[Teo Lachev @tlachev]

Introducing Excel Semantic Table Add-in - https://t.co/5J2SskwPYL In my last post, I ranted about Excel connected tables backed by Power BI semantic models. For years, I’ve heard from clients that all they wanted was to dump query results into regular Excel tables so they co...

[Teo Lachev @tlachev]

Five Ways to Get Data from Fabric Semantic Models in Excel - https://t.co/DkzjrmtV3q Ask a business user where they want to work with the data, and Excel would probably top the list. Regardless of how hard we try to lure users away from it, Excel remains the endpoint of self...

[Teo Lachev @tlachev]

Atlanta Microsoft BI Group Meeting on August 3rd (Getting Hands-On with Microsoft Fabric IQ) - https://t.co/E2VfUbJqcm Atlanta BI fans, please join us online for our next meeting on Monday, August 3rd at 18:30 ET. Dean Jurecic will introduce you to Fabric IQ that helps organ...

[Teo Lachev @tlachev]

Atlanta Microsoft BI Group Meeting on July 6th (Using Generative AI on Structured Data) - https://t.co/M7uQIIFiE5 Atlanta BI fans, please join us online for our next meeting on Monday, July 6th at 18:30 ET. James Serra (Data & AI Solution Architect at Microsoft) will show yo...

[Teo Lachev @tlachev]

Power BI Date Picker - https://t.co/tYUOqHafu4 The June release of Power BI Desktop includes a preview of a new Power BI slicer configuration - Date Picker. It’s meant to solve two issues with report design.

The first one is letting the user select a single date by config...

[Teo Lachev @tlachev]

Open Semantic Interchange (OSI) - https://t.co/rWaA5SSV9V An exited enterprise client came back from a conference where Snowflake delighted them with AI demos and semantic views built on Open Semantic Interchange (OSI) standard. Snowflake even went further to show how their ...

[Teo Lachev @tlachev]

Atlanta Microsoft BI Group Meeting on June 1st (Build Your First Agent in Copilot Studio) - https://t.co/V2LcdFGOUC Atlanta BI fans, please join us in person for our next meeting on Monday, June 1st at 18:30 ET. Elayne Jones (Senior Solution Engineer at Microsoft) will show ...

[Teo Lachev @tlachev]

Replicating BigQuery to Fabric Reloaded - https://t.co/wq7KVzISkn In a previous post, I referred to an engagement where we used the Fabric Copy Job activity to replicate Google BigQuery tables to Fabric, so we can use Direct Lake semantic models. A few months later, the clie...

[Teo Lachev @tlachev]

Replicating BigQuery to Fabric Reloaded - https://t.co/wq7KVzISkn In a previous post, I referred to an engagement where we used the Fabric Copy Job activity to replicate Google BigQuery tables to Fabric, so we can use Direct Lake semantic models. A few months later, the clie...

[Teo Lachev @tlachev]

Power BI Unmaterialized Columns - https://t.co/UxkpCdthke Coming back from a long vacation, I’ve almost missed this interesting Power BI enhancement: Power BI unmaterialized calculated columns. Normally, I avoid the traditional DAX calculated columns for a variety of reasons...

[Teo Lachev @tlachev]

Direct Lake Composite Models - https://t.co/f6sIZ62QqX I’ve mentioned previously in the “A Couple of Direct Lake Gotchas” post that unlike Power BI reports, Excel surprised me by not showing user-defined hierarchies in a Direct Lake model. Direct Lake comes with other gotcha...

[Teo Lachev @tlachev]

Atlanta Microsoft BI Group Meeting on March 2nd (Your First Steps in Microsoft Fabric Using Just SQL) - https://t.co/QdGlJcqDlR Atlanta BI fans, please join us in person for our next meeting on Monday, March 2nd at 18:30 ET. Shabnam Watson will show you how you can apply you...

[Teo Lachev @tlachev]

A Couple of Direct Lake Gotchas - https://t.co/YfYMiwHOsq I’m helping an enterprise client modernize their data analytics estate. As a part of this exercise, a SSAS Multidimensional financial cube must be converted to a Power BI semantic model. The challenge is that business...

[Teo Lachev @tlachev]

Atlanta Microsoft BI Group Meeting on February 2nd (Power BI Translytical Taskflows) - https://t.co/0UvBZMKdnT Atlanta BI fans, please join us in person for our next meeting on Monday, February 2nd at 18:30 ET. Sukhwant Kaur (Product Manager at Microsoft) will show you how s...