Armonk, N.Y.--IBM Corp. and Siebel Systems, San Mateo, Calif., have formed a global strategic alliance to jointly develop and market electronic business software. The companies will market an integrated e-business package consisting of Siebel's customer relationship management software and IBM's Net business-related consulting capabilities. Initially, IBM and Siebel will target companies in the banking, insurance and communications industries. To launch and promote the alliance, IBM and Siebel will roll out a joint marketing program that will include advertising and participation in customer relationship management industry events. Details regarding marketing plans were not disclosed.