Hi there
All material regarding casing prep is useful here! They conduct a standard fit + case interview.
That said, make sure to focus a bit more on the consulting, software, and technology side which is what they specialize in. In terms of industry, make sure to understand Healthcare, Financial Services/PE, Industrials, Telecomms, and Travel/Hospitality.
Good luck and here are some cases for the tech side of your prep!
https://www.preplounge.com/en/management-consulting-cases/candidate-led-usual-style/intermediate/yodaphone-195
https://www.preplounge.com/en/management-consulting-cases/candidate-led-usual-style/intermediate/roma-solutions-senior-expert-level-tech-case-240
https://www.preplounge.com/en/management-consulting-cases/interviewer-led-mckinsey-style/advanced/mckinsey-digital-bcg-platinion-oil-gas-upstream-technology-196