Cloud Technology: EXTENT Ann Neidenbach 17th September 2019 Page 1

What used to take months can now take weeks or hours The shift to Cloud Digitally transforming enterprises (63%) is the leading factor driving greater public cloud adoption followed by the pursuit of IT agility (62%) ~ Source : Forbes 90% of companies are on the cloud with the average business running 38% of its workloads in public cloud ~ Source : Hostingtribunal What used to be fixed based pricing, done well becomes consumption based pricing Cloud Technologies have matured to the point they can meet the high expectations of regulators and financial institutions ~ Source: Bank of England report on future of finance

Cloud benefits TIME TO MARKET: Increasing speed of delivery/agility improving time to market for the businesses assisting on revenue production and margin improvement. QUALITY: Providing access to rich computing capabilities to enable development, testing and change, whilst improving quality and security. CAPABILITY: Providing access to vast R&D capabilities EFFICIENCY: Increased efficiency/cost savings by reducing maintenance overhead, taking advantage of significant scale, improved automation, and better reliability. EFFECTIVENESS: Enabling technology resource to shift focus from IT- intensive systems and service management to business process/platform management, business interfacing and customer servicing.

The LSEG Cloud Program Cloud Service Provider (“CSP”) selection Migration planning (6Rs assessment) Foundational Tooling Cloud adoption is an LSEG board supported strategy with a target of 60% of service delivery and corporate computing operating in the public cloud. Cloud Service Provider (“CSP”) selection: LSEG is implementing a multi- CSP strategy and has selected 3 providers Workload prioritisation: Following an independent assessment of LSEG systems and applications, a business level review and prioritisation will take place. This will drive the migration schedule for 2019 and 2020. Minimum entry criteria enforced through the use of a foundational toolset intended to: • optimise TCO • adherence to security standards; • confirm compliance • A number of strategic tools have been selected for deployment: ▪ Cloud Health ▪ Datadog ▪ Dome9

Governance, regulatory and compliance Contracts negotiated with CSPs have been benchmarked against the relevant regulatory obligations and guidance; standardisation of terms on this basis allows LSEG to be agnostic from a contractual standpoint when determining where to place workloads. Both the FCA and EBA have published guidelines for outsourcing to the cloud, these are being mapped to LSEG policies and traceability will ultimately be provided to the operating model. Technical Design Authority Legal, Risk & Compliance Business Strategy Delivery and Operations

Institutionalising Dev/Ops mentality An automation driven operating model; an approach prioritising automation when moving to cloud and Infra as code to enable a DevOps organisation • A new operating model is being developed to support the pilot deployments on AWS. • A new testing strategy has been developed to validate key metrics as part of the migration; including performance, resiliency and availability.

Cloud reality Business Governance & Security Technical Operational • Innovation possibility and lower barrier of entry • Improved Agility • Increased Capacity • Consumption based charging • Enriched User Satisfaction • SW Licensing • Security framework changes • Regulatory Compliance • Legal and procurement governance • Data Sovereignty • CSP Vendor Agreements • Architecture • Resilience and Disaster recovery • Technology Stack • Performance/Scale • Dependencies • Data Size/Velocity • Institutionalize DevOps mentality • Higher levels of Monitoring & Logging • Continuous development on guardrails • Change Management • People/Skills • Service Levels framework changes