This is a Sources Sought Notice (SSN) for market research purposes only. This SSN is issued solely for information and planning purposes – it does not constitute a Request for Proposal (RFP) or a promise to issue an RFP in the future. This SSN does not commit the IRS to contract for any supply or service. Further, the agency is not at this time seeking proposals and will not accept unsolicited proposals. This SSN is being published to identify potential sources capable of providing support services for the Internal Revenue Service (IRS) Enterprise Network and Information Security Enhancement (ENISE). Responders are advised that the agency will not pay for any information or administrative costs incurred in response to this SSN; all costs associated with responding to this SSN will be solely at the interested party's expense. Not responding to this SSN does not preclude participation in any future RFP, if any is issued. It is the responsibility of the potential offerors to monitor the agency sources for additional information. Background The IRS has identified cloud technology as a key support enabler: hosting and managing big data and enabling IT operational excellence through use of complex applications and programs. Cloud computing will allow the IRS to efficiently manage, operate and run a very large-scale computing infrastructure that delivers the capacity, availability and performance that will permit nearly 90,000 end users to focus on mission accomplishment while accessing more than 500 applications and programs. This effort supports the Cybersecurity Information Protection Enhancement Controls (CIPEC) program's mission to enhance and standardize data protection controls across the enterprise, safeguarding sensitive taxpayer data, and ensuring the integrity and security of the IRS systems. The IRS seeks contractor support to optimize IRS CIPEC Program's Data Loss Protection (DLP) Technical team with experienced Cloud Technical, Federal Information Security Management Act (FISMA) Compliance, and Program support Subject Matter Experts (SMEs), who successfully supported the implementation/integration of an “on prem” Enterprise DLP Commercial-Off-The-Shelf (COTS) Solution within an Enterprise Agency's Hybrid Cloud Ecosystem – primarily utilizing the COTS Cloud product offerings of Microsoft, Skyhigh, Broadcom, Palo Alto etc. Objective No decision has yet been finalized regarding the small business strategy for this acquisition. The purpose of this SSN is to identify interested vendors with capabilities to meet all the Government requirements at a fair market price. The agency anticipates awarding one Contract/Task Order to obtain contractor support services. The agency anticipates that it will issue an RFP in the second Quarter of FY26. Vendors' SSN responses shall be sent to Contracting Officer, Michele Evans, at Michele.N.Evans@irs.gov and Contracting Officer, Jessica Camunez, at Jessica.R.Camunez@irs.gov on or before 14 November 2025, 12…