IBM is acquiring HashiCorp for $6.4 billion, with a 42.6% premium to Monday's closing price. The acquisition includes HashiCorp's products such as Terraform, Vault, and others. The deal's premium has sparked discussion about its reasonableness, with some considering it high and others noting it's still below HashiCorp's 52-week high. The acquisition's implications for HashiCorp's open-source licensing and product development are also being debated.