Your Next Step in Mainframe Innovation

Partner with experts who understand mainframe challenges and opportunities. Have a question or project in mind? We’re ready to listen and provide clear answers.

Our Commitment

Why Partner with 21CS

Working with the 21CS team means gaining access to trusted expertise, solutions designed for your needs, and a forward-looking approach that ensures your mainframe is ready for what’s next.

  • "I really appreciate the team co-partner relationship 21CS establishes with us and I expect all other customers to achieve the goal and results desired. They come to the table with no attitude or goal to nickel and dime for more money and take advantage of the customer should problems arise, or requirements change. I wish all (most) other software and support providers could work and operate in the same professional manner."

    DXC Technology for Freddie Mac

Frequently Asked Questions

Who will I be connected with?

You’ll be connected directly with a 21CS mainframe expert who understands both the technical and business sides of mainframe environments.

How quickly will I hear back?

Our team typically responds within one business day. If your request is urgent, please note that in your message and we’ll prioritize accordingly.

Do I need to be a customer to reach out?

Not at all. Whether you’re a customer, partner, or just exploring options, we’re here to listen and provide guidance.

Will my information be kept private?

Yes. Your contact details are only used to respond to your inquiry and will not be shared outside of 21CS.