Splunk will buy yet another visibility and monitoring company, Flowmill, which follows two acquisitions last month and brings its two-year buying spree total to six startups.

Splunk said it will use Flowmill, a Palo Alto, California-based cloud network visibility company, to build out its Observability Suite, which it also launched last month. Flowmill’s technology will allow customers to analyze and use cloud network and infrastructure data to more quickly resolve network-related issues and reduce network costs, Splunk CTO Tim Tully said in a statement.

“Flowmill’s innovative [network performance monitoring] solution provides real-time observability into network behavior and performance of distributed cloud applications, leveraging extended Berkeley Packet Filter (eBPF) technologies,” Tully said.

eBPF is data source encountered in cloud-native use cases that enables visibility into interactions between applications, networks, and other infrastructure elements. However, to leverage eBPF, systems must be equipped to collect, integrate, and store high data volumes produced by a large distribution system.

This is where Flowmill’s technology fits in, according to both companies. It will bring eBPF and network performance monitoring to Splunk’s Observability Suite. “Flowmill’s approach to building systems that support full-fidelity, real-time, high-cardinality ingestions and analysis aligns well with Splunk’s vision for observability,” Flowmill founer and CEO Jonathan Perry said in a statement.

This latest acquisition is expected to close during Splunk’s fiscal fourth quarter, and the companies did not disclose financial details.

Flowmill follows two other purchases Splunk announced in November — Plumbr and Rigor — which the data and security vendor also bought to build out its new observability portfolio. Plumbr developed application performance monitoring (APM) software that provides auto-instrumentation, user experience monitoring, and application performance insights.

And Rigor is an APM company that provides synthetic monitoring. This essentially mimics an action that a customer would take on an application or website to ensure performance and optimize user experience.

This latest round of acquisitions follow three last year including two other application monitoring and observability vendors SignalFX, which Splunk bought for $1.05 billion, and Omnition.

Buying Flowmill fills a network visibility gap in Splunk’s platform, which Zeus Kerravala, principal analyst at ZK Research, said has been a weak point for the data and security platform.

“In theory, the acquisition makes sense for Splunk as it gives them network visibility, which was a weakness of theirs,” Kerravala said. “Many of the network vendors, such as Cisco, do provide connectors into Splunk for network information, but it was a hole for them.”

However, the benefits of Splunk’s buying spree remain to be seen, he added. “In actuality, Splunk hasn’t really delivered on its vision of any to any visibility as it has many data silos,” Kerravala said. “In fact, in many ways Splunk has become this era’s Computer Associates where it has built a behemoth of product that does a lot of things mediocre and nothing all that well.”