- Maintenance Services
- The defined set of activities the vendor will perform — bug fixes, patches, updates, and support — as specified in the agreement.
- Response Time SLA
- A contractually binding commitment to acknowledge and begin working on a reported issue within a stated number of hours, tiered by severity.
- Severity Level
- A classification — typically Priority 1 through Priority 4 — describing how critically an issue affects the client's business operations.
- Patch
- A small code change released to fix a specific bug, security vulnerability, or performance defect without adding new features.
- Version Update
- A release that introduces new functionality or architectural changes, which may or may not be included in the maintenance fee depending on the agreement.
- Workaround
- A temporary alternative procedure the vendor provides to restore partial functionality while a permanent fix is in development.
- Escrow (Source Code Escrow)
- An arrangement in which a neutral third party holds the software source code and releases it to the client if the vendor ceases operations or breaches the agreement.
- Limitation of Liability
- A clause capping the maximum financial damages the vendor can owe the client — commonly set at the fees paid in the preceding 12 months.
- Maintenance Fee
- The recurring payment — typically annual — the client pays in exchange for the vendor's ongoing support and update obligations.
- End of Life (EOL)
- The date after which the vendor will no longer provide patches, support, or updates for a specific software version.
- Intellectual Property (IP)
- Ownership rights in software code, documentation, and modifications — the agreement must clearly state who owns bug fixes and custom enhancements.
- Force Majeure
- A clause excusing a party from performance obligations when a failure is caused by events outside their reasonable control, such as natural disasters or infrastructure outages.