Source: Gartner Magic Quadrant for BI and Analytics Tools
"Microsoft is the overall vision leader in the Magic Quadrant, having the greatest Completeness of Vision — as demonstrated by the commitment and focus of its BI and analytics leadership team to Power BI. Power BI is at the center of Microsoft's Azure story, which includes Azure Machine Learning, Azure HDInsight, Stream Analytics, and others, which solidifies its status as an area of continued strategic investment and innovation. Cortana Analytics Suite is an umbrella for several of these offerings. Its market execution of Power BI 2.0 (released in July 2015) is greatly improved compared with its initial launch, which failed to gain any traction in the market due to the confusing packaging, positioning and infrastructure prerequisites that few organizations could easily satisfy."
It's clear that Microsoft PowerBI has arrived. We had an opportunity to perform an advisory engagement for a client last year. They are a Microsoft shop and we considered Power BI but it lacked several "must haves" at the time. Now those features are part of the suite and this would be a good choice if we were doing the same study today for this particular client.