Across government, legacy systems are a key source of inefficiency and a major constraint to improving and modernising government services. Legacy systems are difficult and expensive to run and maintain and there are substantial hidden costs from additional business processes to overcome their limitations.40 CDDO has assessed the scale of legacy issues in 153 systems so far, across 16 departments. The framework provides 32 C&AG’s Report, para 3.6 33 Q 56 34 Q 52 35 Q 54 36 Q 6 37 Qq 2–3 38 C&...

Across government, legacy systems are a key source of inefficiency and a major constraint to improving and modernising government services. Legacy systems are difficult and expensive to run and maintain and there are substantial hidden costs from additional business processes to overcome their limitations.40 CDDO has assessed the scale of legacy issues in 153 systems so far, across 16 departments. The framework provides 32 C&AG’s Report, para 3.6 33 Q 56 34 Q 52 35 Q 54 36 Q 6 37 Qq 2–3 38 C&AG’s Report, para 3.5 39 Q 37 40 C&AG’s Report, para 3.17 Digital transformation in government: addressing the barriers to efficiency 13 a consistent way Type: conclusion | Number: 18 | Response status: accepted Government response: 2.1 The government agrees with the Committee’s recommendation. Target implementation date: June 2025 2.2 Through the spend assurance process, CDDO asks departments to consider the effects of legacy, for example, the cost of decommissioning existing legacy systems. To