According to GSA guidelines, contractors must demonstrate enterprise IT capability, security posture, and teaming arrangements that align with the Alliant 3 RFP issued in 2024 and the awards announced February 20, 2026. This means small businesses must be explicit about roles, deliverables, and past performance when approaching Alliant 3 primes; include SBA certifications such as 8(a), HUBZone, WOSB, or SDVOSB where applicable to boost socio-economic status on teaming lists. The paragraph of preparation includes registering in SAM.gov with complete NAICS, PSC, and size-standard data, uploading capability statements and past performance, and validating technical certifications such as FedRAMP authorization for cloud services or documented CMMC progress for DoD-related task orders. GSA’s Alliant 3 guidance emphasizes that primes will evaluate subcontractors and teammates for technical fit, price competitiveness, and compliance readiness; therefore, small firms should position specific Task Order support capabilities, clear labor categories, and price-competitive rates. Include a short description of security artifacts (e.g., ATO letters, FedRAMP package status, CMMC POA&M) to avoid early elimination in source selection. Finally, prepare a concise teaming agreement that specifies responsibilities, billing flows, and flow-down clauses.