Big Data ouTDo 13 min read 17 April 2024

Do I Need to Audit My Big Data Solutions?




In the fast-evolving landscape of big data, it’s easy to assume that once a solution is deployed, it becomes a self-sustaining part of your organisation’s technological ecosystem. The thought process often limits the necessity of intervention to critical updates or software changes, underpinning a belief in the self-sufficiency of big data solutions. However, this perception overlooks the dynamic nature of both the data itself and the evolving technological landscape. Audits of big data solutions are not just beneficial; they are essential for several reasons.

Consider the scenario where an external software update leads to your organisation’s big data solution underperforming or consuming excessive computational resources. Or when certain data pipelines become obsolete, maintaining them unnecessarily inflates costs. Silent failures may cause unnoticed financial losses, while outdated algorithms could generate misleading insights, leading the company astray. Moreover, failing to adopt newer, more efficient solutions can result in missed opportunities for cost savings and enhanced operational efficiency. These examples underscore the importance of regular audits to identify and rectify issues that, though often hidden, can significantly impact your organisation’s bottom line and operational efficacy.

Why an Audit?

Big data solutions, by their nature, are complex and multifaceted. Without regular audits, it’s challenging to identify inefficiencies, redundancies, or inaccuracies that may develop over time. Audits can reveal underperformance, excessive cost accrual due to obsolete structures, silent failures leading to financial drain, misleading data interpretations affecting decision-making, and missed opportunities for adopting more effective solutions. Furthermore, digital sustainability—an increasingly crucial consideration—emphasises the importance of efficient, responsible resource utilisation, as detailed in our “Digital Sustainability” blog post. One must also remember that regular audits are crucial to prevent legal issues, as they adapt to evolving laws and software changes.

How Often Should I Perform an Audit?

The frequency of audits should be tailored to the organisation’s size, data complexity, and industry dynamics. While there’s no one-size-fits-all answer, a general guideline suggests at least an annual audit to ensure systems remain optimal. For organisations in rapidly changing industries or those heavily reliant on real-time data, bi-annual audits may be more appropriate.

When to Use Internal vs. External Teams

When deciding between internal and external teams for auditing big data solutions, several factors come into play, each with its own set of advantages and considerations.

Internal Teams: Internal audit teams are inherently familiar with the company’s operational processes, culture, and data management practices. This intimate knowledge enables them to navigate the company’s systems efficiently, potentially identifying issues more quickly due to their understanding of the company’s backend and operational nuances. However, it’s crucial to recognise that a user who is proficient in utilising software or a system may not necessarily possess the technical skills or perspective required to effectively audit the system’s backend. Or possess the knowledge of the wider structures. Proficiency in using a system doesn’t equate to an in-depth understanding of its underlying architecture or the potential inefficiencies and risks embedded in its design. This gap can lead to significant oversight during audits, as operational inefficiencies, security vulnerabilities, and other critical issues may not be adequately identified or assessed.

Moreover, while internal audit teams have established habits which speed up their work, these habits may cloud their judgment. It’s essential to recognize that their reports of no immediate issues do not necessarily mean all is well. Biases can lead to significant omissions, and issues may only come to light when clients raise complaints—often too late to prevent the escalation of technical debt and reliance on temporary fixes. Bringing in an external auditor can provide a fresh perspective that identifies and resolves problems overlooked by those too familiar with the system.

External Teams: In contrast, external audit teams offer a fresh perspective and specialised expertise that internal teams may lack. Being detached from the company’s daily operations and biases, they can conduct unbiased analyses, potentially uncovering issues that internal staff might overlook. External auditors often bring a wide range of experience from working with different companies and industries, equipping them with a diverse toolkit of audit techniques and a keen eye for identifying best practices and red flags. This broad perspective enables them to spot trends, risks, and opportunities that those within the company might miss.

For routine checks and assessments, internal audits can be efficient and cost-effective, leveraging existing resources and deep company knowledge. However, for more comprehensive evaluations, particularly those aimed at identifying systemic issues or exploring opportunities for significant improvements, external audits are often more suitable. They provide an unbiased review and a level of scrutiny that can be invaluable in ensuring your big data solutions are not only compliant but also optimised for performance and cost-effectiveness.

In sum, while internal teams are invaluable for ongoing monitoring and understanding specific operational nuances, external teams are crucial for bringing an unbiased perspective and specialised auditing expertise. Organisations should strategically utilise both internal and external audits at different times to ensure a comprehensive evaluation of their big data solutions, capitalising on the strengths of each to maintain efficient, secure, and effective data operations.

My Team Raises No Red Flags—Do I Still Need an Audit?

Even if your team reports no immediate issues, it’s critical to understand that underlying problems often go unnoticed without a thorough audit. These hidden issues can lead to financial losses, inefficient resource use, and incorrect decision-making. Regular audits are key to uncovering these silent but significant problems, providing a compelling justification for their necessity beyond the absence of visible red flags.

A prime example of the importance of such audits can be seen in our case study titled “Failing Silently: Care for a Case Long Closed.” In this situation, a past client’s data pipeline began to fail without any obvious signs of trouble, because the email notifications that were meant to alert them were easily overlooked. Our team, being subscribed to these notifications, was able to identify the issue and proactively offer our assistance. This intervention not only resolved the silent failure but also led to optimisations that significantly reduced the client’s computational costs. This case highlights how even seemingly minor unnoticed issues can have substantial implications, underlining the vital role of audits in ensuring the integrity and efficiency of big data solutions.

For organisations looking to maintain the health of their big data solutions, this case study serves as a reminder of the hidden dangers that can lurk within unmonitored systems and the value of regular audits in identifying and addressing these issues before they escalate.

Uncovering Hidden Issues in Big Data Solutions: The Need for Vigilant Auditing

Identifying less obvious issues within your organisation’s big data solutions requires a keen eye and a proactive approach. Hidden problems, if left unchecked, can lead to significant inefficiencies, increased costs, and decision-making based on inaccurate data. Here are several scenarios that underscore the importance of vigilance and regular audits:

  • External Software Updates: Integration with external software is prevalent in big data solutions. When such external software is updated, it can inadvertently degrade the performance of your system or increase computational power usage, often without triggering any alerts. This occurs because the new version may no longer fit your existing infrastructure or may disrupt operational workflows, particularly with software outside your control—unlike internally managed software, where there is at least some degree of oversight. Regular audits can spot these discrepancies, allowing for timely adjustments. External software updates also offer opportunities to enhance efficiency when used thoughtfully. These can introduce new capabilities, potentially unlocking improvements and enabling configurations that were not previously possible. Awareness of these updates is crucial for optimising performance. 
  • Obsolete Infrastructure: Parts of data infrastructure or processes may become outdated over time, unnecessarily raising operational costs. Auditing helps in identifying these obsolete elements, facilitating their removal or update to streamline operations and reduce expenses.
  • Silent Failures: Components within the big data infrastructure may fail silently, risking data loss, inaccurate analyses, and financial repercussions. Audits are crucial for detecting and rectifying these issues before they escalate.
  • Incorrect Insights: Big data solutions can occasionally generate misleading insights due to inaccuracies in data processing or the algorithms used for analysis, potentially leading to flawed decision-making. Regular audits are vital as they not only uncover the root causes of such discrepancies but also enhance the testing and monitoring processes. Improving these systems reduces the likelihood of similar issues arising in the future. These audits ensure data reliability and contribute positively by continuously refining data integrity and analysis accuracy, thereby strengthening the overall decision-making framework.
  • Availability of Better Solutions: The fast-paced evolution of technology means newer, more efficient solutions are constantly emerging. An audit might reveal that transitioning to a more recent technology could enhance operational efficiency, reduce costs, and free up team resources.
  • Data Quality Degradation: Over time, the quality of data being processed and stored can degrade, leading to inaccurate analytics and decision-making. Issues such as duplicate data entries, incomplete datasets, or outdated information can significantly impact the integrity of your data analysis. Regular data quality assessments and introducing quality safeguards are essential to ensure the reliability of your data.
  • Security Vulnerabilities: As big data solutions evolve, they can become susceptible to new security threats that were not previously a concern. Unpatched systems, weak encryption standards, or inadequate access controls can expose sensitive data to unauthorised access. Proactive security audits can help identify and mitigate these vulnerabilities before they are exploited.
  • Inefficient Data Processing: Inefficiencies in data processing may not always be obvious but can affect performance and lead to resource wastage. Auditing these processes can uncover opportunities for optimisation.
  • Compliance Issues: Regulations concerning data privacy and protection, such as GDPR in Europe or CCPA in California, are constantly evolving. A big data solution that was compliant a year ago may no longer meet legal requirements today. Audits focused on regulatory compliance can help identify potential legal exposures and guide necessary adjustments to maintain compliance.
  • Integration Issues with New Technologies: As companies adopt new technologies, integration with existing big data solutions can introduce unforeseen issues. These might include data format mismatches, latency in data synchronisation, or bottlenecks in data flow. Regular reviews of system integrations can ensure that new and existing technologies work together seamlessly.
  • Resource Overallocation: In the quest for optimal performance, it’s possible to over-allocate resources to certain tasks or services within the big data ecosystem. This can lead to unnecessary expenses without a corresponding improvement in performance. Audits can help identify areas where resources can be reallocated or scaled down to achieve a more cost-effective balance.
  • Machine Learning Model Drift: For organisations relying on machine learning models for data analysis and prediction, model drift is a critical concern. As the underlying data changes over time, models can become less accurate and fail to predict outcomes effectively. Regular monitoring and retraining of models are essential to maintain their accuracy and relevance.
  • Inefficient Team Structure and Communication: Miscommunication, especially between business and technical teams, can severely impede project efficiency. Audits can pinpoint communication breakdowns, revealing how well engineers understand business needs and interact with users. They also assess interactions between data scientists and engineers to prevent the formation of silos. Such silos can trap data scientists in problems that a data engineer could resolve more efficiently, distracting them from their primary tasks. To address these issues, we offer solutions such as remodeling team structures and introducing data mesh practices, which can enhance collaboration and streamline workflows by assigning clearer roles and responsibilities.

A comprehensive and ongoing audit strategy is vital to address these and other potential issues within big data solutions. The list above is not exhaustive. By extending the scope of audits to cover these areas, organisations can ensure their data management systems remain secure, compliant, efficient, and aligned with strategic objectives, thereby avoiding the pitfalls of hidden problems.

More obvious issues to check

Organisations leveraging big data and cloud technologies must stay vigilant to not only subtle and hidden issues but also more overt challenges that can signal inefficiencies and potential cost overruns. Here are several clear indicators that suggest a need for a deeper audit:

  • Duplicated Structures Across Departments: In the drive towards innovation, departments within an organisation may independently develop or adopt structures and processes that fulfil similar functions. This duplication not only consumes unnecessary cloud and computing resources but also leads to inefficiencies in data management and analysis. It often goes unnoticed because each department focuses on its immediate needs, neglecting the potential for consolidation or the adoption of unified solutions that could serve the entire organisation more effectively and economically.
  • Sudden Increase in Processing Time: A noticeable slowdown in data processing or analytics tasks can indicate underlying issues such as resource contention, inefficient query execution, or inadequate scaling of resources. This is often more evident and prompts an investigation into the allocation and optimisation of computing resources.
  • Escalating Cloud Storage Costs: An unexplained rise in storage costs can be a red flag for redundant data storage practices, such as unnecessary duplication of data sets or bad retention policy. Regular audits can help identify opportunities to optimise data storage strategies and implement data lifecycle management policies.
  • Frequent Data Access Issues: Regular occurrences of access problems, such as delays in retrieving data or failures in data delivery systems, can indicate misconfigurations, inadequate access controls, or scalability issues within the data architecture. These are usually noticeable by end-users and warrant an immediate review.
  • Inconsistencies in Data Quality and Reporting: When users across different departments report inconsistencies in analytics results or data quality, it might reflect issues with the underlying data, such as incomplete data integration, errors in data transformation processes, or inconsistent data cleaning practices. Addressing these issues can improve decision-making accuracy and operational efficiency.
  • Overlapping Tools and Software Licenses: It’s not uncommon for different teams to purchase or subscribe to similar tools and software solutions independently, leading to unnecessary expenses. A clear inventory and audit of software licenses and tools can reveal overlapping functionalities and offer opportunities to streamline software use across the organisation, potentially saving costs and simplifying training requirements.
  • Compliance and Regulatory Changes: As laws and regulations evolve, especially around data protection and privacy (e.g., GDPR, CCPA), compliance becomes an ongoing concern. Regular audits are needed to ensure that data handling and processing remain compliant over time.
  • Security Breach and Data Leakage Indicators: Signs of unauthorised access or unusual data traffic patterns can indicate security breaches or vulnerabilities that need immediate attention.
  • Underutilisation of Resources: While overutilisation is a concern, underutilisation also indicates inefficiency. Resources that are not being fully utilised still incur costs, highlighting the need for resource optimisation strategies.
  • Data Lifecycle Management Issues: Poor management of the data lifecycle, from creation to deletion, can lead to bloated storage, compliance risks, and inefficiencies. Regular reviews can ensure data is managed efficiently throughout its lifecycle.
  • Technology Obsolescence: Rapid technological advancements can render current systems obsolete or suboptimal. Regular technology assessments can help identify when an upgrade or replacement is necessary to maintain competitive advantage.

Identifying and addressing these more obvious issues can significantly enhance the efficiency and cost-effectiveness of an organisation’s big data solutions. Regular monitoring, combined with a proactive approach to auditing and optimisation, ensures that the infrastructure supporting big data initiatives remains robust, scalable, and aligned with the organisation’s goals.

How long does an audit take?

The time it takes to complete an audit can vary widely, influenced by factors such as the size of the company, the complexity of its data systems, and the specific goals of the audit itself. While smaller enterprises may navigate through the audit process within a few weeks, larger organisations with intricate data landscapes could find the process stretching over several months. Yet, there are effective strategies that can be employed to expedite the auditing process, ensuring that it is both thorough and time-efficient. Here’s how:

  • Pre-Audit Preparation: One of the most effective ways to speed up the audit process is thorough pre-audit preparation. This includes clearly defining the audit’s scope, objectives, and key areas of focus. Having a well-prepared plan can help direct efforts more efficiently, ensuring that the audit team spends time on the most critical aspects.
  • Leverage Automated Tools: Utilising automated tools for data analysis and review can significantly reduce the time required for manual checks. Automated tools can quickly scan large volumes of data, identify inconsistencies, and highlight potential areas of concern. This allows auditors to focus on investigating these flagged issues more deeply.
  • Internal Team Collaboration: Encouraging collaboration between the audit team and the company’s internal teams can also expedite the process. Internal teams possess valuable knowledge about the day-to-day operations and may provide insights that can guide the audit more effectively. Additionally, their cooperation can facilitate easier access to data and documentation, reducing the time needed to gather and verify information.
  • Prioritise High-Risk Areas: While a comprehensive audit may be necessary, prioritising high-risk areas or known problem spots can lead to quicker identification of critical issues. By focusing on these areas first, the audit can provide immediate value, and efforts can be adjusted based on initial findings.
  • Continuous Monitoring and Regular Mini-Audits: Implementing continuous monitoring systems and conducting regular mini-audits can help maintain oversight of the big data environment. This proactive approach allows organisations to identify and address issues as they arise, making the full audit process more manageable and less time-consuming.
  • External Expertise: Engaging with external auditors who specialise in big data can bring added efficiency to the audit process. These experts often bring proprietary methodologies and tools that can accelerate data analysis and review. Their experience in conducting similar audits can also provide a faster pathway to identifying and resolving issues.

By employing these strategies, organisations can significantly reduce the duration of their big data audits. The key is to balance thoroughness with efficiency, ensuring that the audit is comprehensive enough to identify critical issues while also being conducted in a time-effective manner.

After an Audit Reveals Issues, Then What?

Identifying issues during an audit is merely the first step toward enhancing your organisation’s data management and security practices. The subsequent phase—assessing the impact of these issues and formulating a plan for remediation—is equally crucial. Decisions on how to tackle identified problems should be made with careful consideration of the auditor’s insights. The auditor, having thoroughly examined your infrastructure and analysed the issues, is in a prime position to offer a detailed assessment and recommendation for fixing these problems. Their comprehensive understanding allows them to provide a relevant quote for the remediation efforts, which can serve as a valuable benchmark when evaluating options for addressing the issues.

When considering how to proceed, it’s important not just to focus on the cost of remediation services. While budget constraints are a reality for any organisation, the cheapest option is not always the most cost-effective in the long run. Instead, organisations should evaluate potential service providers on several additional factors, including the benefits they offer, the guarantees they provide, and the overall long-term value they bring to your big data solutions.

This comprehensive approach ensures that the chosen remediation strategy not only addresses the immediate issues identified during the audit but also aligns with the organisation’s broader goals and requirements. It allows for a more informed decision-making process that takes into account the complexity of the problems, the capabilities of the remediation team, and the future needs of the company’s data infrastructure.

Securing Your Future: The Imperative for Big Data Audits

The importance of conducting regular audits on your big data solutions is paramount. Such audits are key to ensuring the efficiency, accuracy, and sustainability of your data-driven initiatives. Hidden problems may lurk beneath the surface, posing risks to your operations and the integrity of your data. To navigate these challenges and safeguard your organisation from the pitfalls of big data issues, partnering with a trusted expert like TantusData is crucial. We offer comprehensive audit services designed to meet your specific needs, helping you uncover and address any underlying issues. Explore our case studies to see how we’ve driven success for other organisations and consider reaching out for an expert evaluation. Visit our contact page today to learn more and take the first step towards securing and optimising your big data operations.


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