Exhibit 99.8

CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

To the Board of Directors of Alithya Group inc.

We consent to the use of:

•our report dated June 12, 2024 on the consolidated financial statements of Alithya Group inc. (the "Company") which comprise the consolidated statements of financial position as of March 31, 2024 and 2023, the related consolidated statements of operations and comprehensive loss, changes in shareholders’ equity, and cash flows for the years ended March 31, 2024 and 2023, and the related notes (collectively the "consolidated financial statements"), and

•our report dated June 12, 2024 on the effectiveness of the Company's internal control over financial reporting as of March 31, 2024

each of which is included in the Annual Report on Form 40-F of the Company for the fiscal year ended March 31, 2024.

We also consent to the incorporation by reference of such reports in the Registration Statements (Nos. 333-228487 and 333-265666) on Form S-8 of the Company.

/s/ KPMG LLP

Montréal, Canada

June 13, 2024