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Microsoft announced its acquisition of Java specialist jClarity on August 19, 2019, with two linked aims: bring data-driven Java Virtual Machine (JVM) optimization expertise to work on Java performance in Azure, and support jClarity’s continuing open-source contributions. The announcement did not disclose financial terms.
Why did Microsoft acquire jClarity?
Microsoft framed the deal as both an Azure performance initiative and a commitment to open-source Java. In its August 19, 2019 announcement, John Montgomery, then Corporate Vice President, Azure AI, said the acquisition would support jClarity’s contributions to open source while helping drive better performance for Java workloads on Azure.
- Azure performance: Microsoft said jClarity’s expertise would help it optimize Java workloads and improve the experience for developers and end users.
- Open-source work: Microsoft said the team would continue collaborating with the OpenJDK community.
Those were the stated goals at announcement, not a quantified claim that the acquisition had already delivered particular performance gains. Microsoft’s 2019 blog described the intended collaboration this way: “Microsoft Azure and jClarity engineers will be working together to make Azure a better platform for our Java customers and internal teams, improving the experience and performance of the platform for Java developers and end-users.”
What did jClarity bring to Microsoft?
Microsoft described jClarity’s team as Java specialists with experience in data-driven JVM optimization, customer application optimization, and leadership in the Java open-source community. JVM optimization focuses on how Java applications run on the Java Virtual Machine, making that expertise relevant to Microsoft’s stated effort to improve the performance of Java workloads.
#1 Best Overall
- Read Before You Buy — No Video Output: These adapters support charging and USB 2.0 data transfer, but cannot transmit video signals. Except for standard USB webcams (which use USB data only), they are not compatible with HDMI/DisplayPort cables, video-capable USB-C hubs, or docking stations with video output.
- Convert USB-A Ports to USB-C: Designed to connect USB-C earphones, cables, flash drives, card readers, and other USB-C accessories to standard USB-A ports. Plug-and-play with no drivers or software required.
- Aluminum Alloy Housing: Built with a sturdy aluminum alloy shell that aids in heat dissipation and protects against daily wear and scratches. Designed to maintain a stable and secure connection.
- Compact & Travel-Friendly: The ultra-compact design allows the adapter to stay plugged into your device without blocking adjacent ports or adding bulk, reducing wear and tear on your original USB ports.
- 12-Month Warranty: Backed by a 12-month manufacturer warranty for peace of mind. Designed to meet strict quality control standards for reliable everyday performance.
The acquisition also followed an existing relationship: Microsoft said it had sponsored AdoptOpenJDK since June 2018. That sponsorship began more than a year before the jClarity announcement; it was not a result of the acquisition.
How did the deal fit Microsoft’s Java and Azure work?
Microsoft presented the acquisition as an extension of Java work already underway. Its 2019 announcement cited Azure HDInsight and Minecraft as large-scale Java deployments, and named Adobe, Daimler, and Société Générale as customers running Java production workloads on Azure. These are examples Microsoft gave in 2019, not a current customer list.
Microsoft also said more than half of Azure compute workloads were running on Linux in 2019, using that figure to describe Azure’s role as a platform for open-source technologies, including Java. The figure is historical context from the acquisition announcement, not a current measurement.
Rank #2
- 5-in-1 USB-C Hub: Experience comprehensive connectivity featuring a Power Delivery input, two USB-A 2.0 ports, a USB-A 3.0 port, and an HDMI port. (Note: The USB-C power delivery input port is only for connecting an external wall charger to power your laptop and cannot power peripheral devices.)
- 90W Pass-Through Charging: Achieve optimal charging with 90W pass-through power to your laptop, supported by a total input of 100W, with the hub reserving 10W for operational efficiency. (Note: Wall charger not included.)
- Quick Data Transfers: Accelerate your productivity with rapid data transfers using a high-speed 5Gbps USB 3.0 port and two 480Mbps USB 2.0 ports.
- 4K HDMI Display: Enhance your visual experience with a hub capable of delivering 4K resolution at 30Hz in both mirror and extend modes. Please note that this hub is compatible with MacBook (macOS 12 and newer), Windows 10 and 11, ChromeOS, and laptops equipped with DP Alt Mode and Power Delivery. Note: This device is not compatible with Linux.
- What You Get: Anker USB-C Hub (5-in-1, 4K HDMI), welcome guide, 18-month warranty, and our friendly customer service.
What did Microsoft report after the acquisition?
A later Microsoft overview, How Microsoft Applies Java, says that after the acquisition the company began a dedicated effort to optimize its internal Java workloads and contribute what it learned to OpenJDK. It reports more than 2 million JVMs in production on Microsoft internal systems. The PDF does not state a publication date, and Microsoft does not attribute that scale or a specific performance result to jClarity alone.
When was jClarity acquired, and were the terms disclosed?
Microsoft announced the acquisition on August 19, 2019, and its investor acquisition history lists jClarity on that date. The official announcement reviewed does not state a purchase price or other financial terms. Contemporary TechCrunch coverage also reported that the companies did not discuss the terms.
Quick Recap
Best Value
- 5-in-1 Connectivity: Equipped with a 4K HDMI port, a 5 Gbps USB-C data port, two 5 Gbps USB-A ports, and a USB C 100W PD-IN port. Note: The USB C 100W PD-IN port supports only charging and does not support data transfer devices such as headphones or speakers.
- Powerful Pass-Through Charging: Supports up to 85W pass-through charging so you can power up your laptop while you use the hub. Note: Pass-through charging requires a charger (not included). Note: To achieve full power for iPad, we recommend using a 45W wall charger.
- Transfer Files in Seconds: Move files to and from your laptop at speeds of up to 5 Gbps via the USB-C and USB-A data ports. Note: The USB C 5Gbps Data port does not support video output.
- HD Display: Connect to the HDMI port to stream or mirror content to an external monitor in resolutions of up to 4K@30Hz. Note: The USB-C ports do not support video output.
- What You Get: Anker 332 USB-C Hub (5-in-1), welcome guide, our worry-free 18-month warranty, and friendly customer service.
Rank #4
- Dual Converters, Infinite Potential：Includes 2× USB C male to USB A female adapters and 2× USB A male to USB C female adapters. Perfect for a wide range of uses—tablets with Bluetooth keyboards, expand USB ports on macbook, and more. Two different converters for all your daily needs
- Next-Level 10Gbps & 3A Charging: No more slow 480Mbps, this usb to usb c adapter has a transfer speed of up to 10Gbps, allowing you to do more transferring in less time. This usb adapter fits both USB A and USB C charger, supporting up to 3A fast charging
- Upgraded Exquisite Craftsmanship: With an aluminum alloy housing and metal connector, the usbc to usb adapter is extremely durable and sturdy. Rigorously tested to withstand more than 10,000 times of plugging and unplugging, ensuring long-lasting performance
- Broad Compatible: The usb c to usb adapter widely supports all USB C/ USB A devices like laptops, tablets, cellphones, car chargers, and phone chargers. Such as compatible with MacBook Pro/Air 2023/2022, Thunderbolt 4/3 Devices,Apple MagSafe Watch 9/8/7/SE/Ultra, iPad Pro 2022/2021, Samsung Galaxy S23/S20/S10, and iPhone 17/16/15 Pro. Plug and play
- Please Note: To reach 10Gbps speed, keep the cable under 3.3 ft. For USB A Male to USB C adapters, try flipping the USB C connector. USB C Male to USB A adapters support bidirectional 10Gbps transfer within 3.3 ft
Rank #3
- Sleek 7-in-1 USB-C Hub: Features an HDMI port, two USB-A 3.0 ports, and a USB-C data port, each providing 5Gbps transfer speeds. It also includes a USB-C PD input port for charging up to 100W and dual SD and TF card slots, all in a compact design.
- Flawless 4K@60Hz Video with HDMI: Delivers exceptional clarity and smoothness with its 4K@60Hz HDMI port, making it ideal for high-definition presentations and entertainment. (Note: Only the HDMI port supports video projection; the USB-C port is for data transfer only.)
- Double Up on Efficiency: The two USB-A 3.0 ports and a USB-C port support a fast 5Gbps data rate, significantly boosting your transfer speeds and improving productivity.
- Fast and Reliable 85W Charging: Offers high-capacity, speedy charging for laptops up to 85W, so you spend less time tethered to an outlet and more time being productive.
- What You Get: Anker USB-C Hub (7-in-1), welcome guide, 18-month warranty, and our friendly customer service.
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