Our client, a global Clinical Research Organization based in North Carolina, was running a Siebel 8.1.1.5 Clinical application with 5,000+ concurrent users and had to upgrade and deploy Open UI before IE 11 end-of-life. A different consulting partner had previously tried to perform the upgrade but had failed after over a year of trying.
The 8.1.1.5 application was heavily customized, and additionally leaned on out-of-the-box Clinical functionality which had changed in 22.6. Nonetheless, in a period of 6 months from kickoff to go live, a team of four Siebel experts from Accelsior with a combined 60+ years of Siebel consulting experience between them successfully completed the upgrade from start to finish.