Here are some of the most prominent venture capital and merger and acquisition news items from March. If you’d like SDxCentral to report on your company’s VC or M&A activity in our monthly Money Moves section, or if you have any tips on that activity, please send the information to Julia King ([email protected]).

RISC-V chipmaker SiFive scored $175 million in a Series F funding round led by Coatue Management. The funding round brings the company's total raised to $350 million and puts it deep into double-unicorn territory with a valuation north of $2.5 billion.

SiFive develops chips based on a relatively new open source instruction set architecture (ISA) called RISC-V. The company was founded by many of the same architects behind the original ISA.

RISC-V is a reduced instruction set computer (RISC) architecture not dissimilar to Arm, Power, or Sun SPARC. But unlike previous permutations of the RISC architecture, RISC-V is entirely open source, freely available, and absolutely tiny.

Docker Inc. raised $105 million in an oversubscribed Series C funding round that "gives us the juice to step on the gas" and expand both product development and the vendor's geographical footprint, CEO Scott Johnson told SDxCentral.

"Developers are hungry for additional productivity, and their managers are hungry to see those developers productive with additional security built into those applications," Johnson explained, adding that this trend will drive Docker's allocation of its additional capital.

With these investments, Docker plans to build a tool that gives developers a consistent view and integration process of applications in the cloud-native ecosystem. At the same time, this tool will allow ecosystem partners to extend Docker's functionality across their own services "in a way that's friendly to developers and easy for them to consume and access," Johnson said.

"You can imagine one-click extensibility that allows a new feature functionality to be presented to the developer in a natural, very integrated fashion," he added.

Nvidia acquired Excelero.

Bright Security raised $20 million in Series A funding.

Calyptia closed its seed funding round with $5 million in investments.

Balbix raised $70 million in Series C funding.

Tricentis acquired Tx3 Services.

Beyond Limits acquired Altec.

Selector raised $28 million in Series A funding.

Snowflake acquired Streamlit.

Mobileye submitted with the U.S. Securities and Exchange Commission (SEC) for the proposed IPO of its common stock.

Cybersixgill raised $35 million in Series B funding.

AHEAD acquired vCore Technology Partners.

Axonius raised $200 million in Series E funding.

CircleCI acquired Ponicode.

Cyber Security Works acquired CYR3CON IP.

EFFECT Photonics acquired Viasat’s coherent optical digital signal processing business.

Atlan raised $50 million in Series B funding.

HelpSystems acquired Alert Logic.

OneLayer emerged from stealth with $8.2 million in seed funding.

Thrive acquired SouthTech.

The U.S. Department of Defense awarded Verizon three Enterprise Infrastructure Solutions task order awards worth $966.5 million.

Pinecone raised $28 million in Series A funding.

RapidAPI raised $150 million in Series D funding.

Netrix acquired Edrans.

Nucleus Security raised $20 million in Series B funding.

Telefónica acquired Incremental.

ForAllSecure raised $21 million in Series B funding.

Harness acquired ChaosNative.

Skyports raised $23 million in Series B funding.

Park Place Technologies acquired Reliant Technology.

Theta Lake raised $50 million in Series B funding.

Nucleus Security raised $20 million in Series B funding.

Equinix acquired four data centers in Chile and Peru for $705 million.

Island raised $115 million in Series B funding.

Spectro Cloud closed its Series B funding round with $40 million in investments.

Unleash raised $14 million in Series A funding.

Nansuni raised $60 million.

Shoreline.io raised $35 million in Series B funding.

Celona raised $60 million in Series C funding.

Apiwiz raised $2 million in seed funding.

LambdaTest raised $45 million in investments.

Perception Point acquired Hysolate.

Medius acquired OnPay Solutions.

TEAL raised $10.8 million in funding.

HackerRank closed its Series D funding round with $60 million in investments.

Prodport raised $3.6 million in funding.