My design for InDesign Intro..

Hi Sameh,

Thanks for reaching out & sharing your design with the community. I'd encourage you to share your creativity on Behance. It is world's largest creative network for showcasing and discovering creative work.

Eugene has covered everything else in his response.

Regards,

Ashutosh

There's a brief history of Splash Screens here

https://creativepro.com/a-history-of-indesign-splash-screens/

You can apparently change your splash screen

https://community.adobe.com/t5/illustrator-discussions/replace-your-ai-splash-screen-with-venus/m-p/12317874

I presume the same works for InDesign

More reading here

https://community.adobe.com/t5/indesign-discussions/which-dll-contains-the-splash-screen/td-p/4356066

more discussions

https://community.adobe.com/t5/adobe-media-encoder-discussions/change-media-encoder-s-splash-screen/m-p/9293730

Some info on splash screen customisation

https://asktimgrey.com/2018/05/31/custom-splash-screen/

An artists gets noticed

https://creativecloud.adobe.com/cc/discover/article/artist-david-acevedo-makes-a-splash?locale=en