Bainbridge Island-based Avalara announced this morning that it has acquired yet another provider of cloud-based sales tax software. This time, Avalara said it has acquired Tax Technology Services, a provider of cloud-based, sales tax exemption certificate management software. Financial terms of the buy were not disclosed. TTS develops CErtCapture, software used for managing exemption and resale certificates, use tax certificates, W-9s, excise tax, and other tax related documents. Avalara said the buy will augment its own offerings. Avalara also will hire all 25 of TTS' former employees, who are based in Raleigh, North Carolina. Avalara develops tax related software, including software used by online retailers to property calculate and report taxes for different states and local governments.